launcher

   1 #!/bin/bash
   2
   3 usage () {
   4   echo "Usage: launcher COMMAND CONFIG [--skip-prereqs] [--docker-args STRING]"
   5   echo "Commands:"
   6   echo "    start:      Start/initialize a container"
   7   echo "    stop:       Stop a running container"
   8   echo "    restart:    Restart a container"
   9   echo "    destroy:    Stop and remove a container"
  10   echo "    enter:      Open a shell to run commands inside the container"
  11   echo "    logs:       View the Docker logs for a container"
  12   echo "    bootstrap:  Bootstrap a container for the config based on a template"
  13   echo "    rebuild:    Rebuild a container (destroy old, bootstrap, start new)"
  14   echo "    cleanup:    Remove all containers that have stopped for > 24 hours"
  15   echo
  16   echo "Options:"
  17   echo "    --skip-prereqs             Don't check launcher prerequisites"
  18   echo "    --docker-args              Extra arguments to pass when running docker"
  19   echo "    --skip-mac-address         Don't assign a mac address"
  20   exit 1
  21 }
  22
  23 command=$1
  24 config=$2
  25 user_args=""
  26
  27 while [ ${#} -gt 0 ]; do
  28   case "${1}" in
  29   --debug)
  30     DEBUG="1"
  31     ;;
  32   --skip-prereqs)
  33     SKIP_PREREQS="1"
  34     ;;
  35   --skip-mac-address)
  36     SKIP_MAC_ADDRESS="1"
  37     ;;
  38   --docker-args)
  39     user_args="$2"
  40     shift
  41     ;;
  42   esac
  43
  44   shift 1
  45 done
  46
  47 # Docker doesn't like uppercase characters, spaces or special characters, catch it now before we build everything out and then find out
  48 re='[A-Z/ !@#$%^&*()+~`=]'
  49 if [[ $config =~ $re ]];
  50   then
  51     echo
  52     echo "ERROR: Config name must not contain upper case characters, spaces or special characters. Correct config name and rerun $0."
  53     echo
  54     exit 1
  55 fi
  56
  57 cd "$(dirname "$0")"
  58
  59 docker_min_version='17.03.1'
  60 docker_rec_version='17.06.2'
  61 git_min_version='1.8.0'
  62 git_rec_version='1.8.0'
  63
  64 config_file=containers/"$config".yml
  65 cidbootstrap=cids/"$config"_bootstrap.cid
  66 local_discourse=local_discourse
  67 image=discourse/base:2.0.20171008
  68 docker_path=`which docker.io || which docker`
  69 git_path=`which git`
  70
  71 if [ "${SUPERVISED}" = "true" ]; then
  72   restart_policy="--restart=no"
  73   attach_on_start="-a"
  74   attach_on_run="-a stdout -a stderr"
  75 else
  76   attach_on_run="-d"
  77 fi
  78
  79 if [ -n "$DOCKER_HOST" ]; then
  80   docker_ip=`sed -e 's/^tcp:\/\/\(.*\):.*$/\1/' <<< "$DOCKER_HOST"`
  81 elif [ -x "$(which ip 2>/dev/null)" ]; then
  82   docker_ip=`ip addr show docker0 | \
  83                   grep 'inet ' | \
  84                   awk '{ split($2,a,"/"); print a[1] }';`
  85 else
  86   docker_ip=`ifconfig | \
  87                   grep -B1 "inet addr" | \
  88                   awk '{ if ( $1 == "inet" ) { print $2 } else if ( $2 == "Link" ) { printf "%s:" ,$1 } }' | \
  89                   grep docker0 | \
  90                   awk -F: '{ print $3 }';`
  91 fi
  92
  93 # From https://stackoverflow.com/a/44660519/702738
  94 compare_version() {
  95     if [[ $1 == $2 ]]; then
  96         return 1
  97     fi
  98     local IFS=.
  99     local i a=(${1%%[^0-9.]*}) b=(${2%%[^0-9.]*})
 100     local arem=${1#${1%%[^0-9.]*}} brem=${2#${2%%[^0-9.]*}}
 101     for ((i=0; i<${#a[@]} || i<${#b[@]}; i++)); do
 102         if ((10#${a[i]:-0} < 10#${b[i]:-0})); then
 103             return 1
 104         elif ((10#${a[i]:-0} > 10#${b[i]:-0})); then
 105             return 0
 106         fi
 107     done
 108     if [ "$arem" '<' "$brem" ]; then
 109         return 1
 110     elif [ "$arem" '>' "$brem" ]; then
 111         return 0
 112     fi
 113     return 1
 114 }
 115
 116
 117 install_docker() {
 118   echo "Docker is not installed, you will need to install Docker in order to run Launcher"
 119   echo "See https://docs.docker.com/installation/"
 120   exit 1
 121 }
 122
 123 check_prereqs() {
 124
 125   if [ -z $docker_path ]; then
 126     install_docker
 127   fi
 128
 129   # 1. docker daemon running?
 130   # we send stderr to /dev/null cause we don't care about warnings,
 131   # it usually complains about swap which does not matter
 132   test=`$docker_path info 2> /dev/null`
 133   if [[ $? -ne 0 ]] ; then
 134     echo "Cannot connect to the docker daemon - verify it is running and you have access"
 135     exit 1
 136   fi
 137
 138   # 2. running an approved storage driver?
 139   if ! $docker_path info 2> /dev/null | egrep -q '^Storage Driver: (aufs|btrfs|zfs|overlay|overlay2)$'; then
 140     echo "Your Docker installation is not using a supported storage driver.  If we were to proceed you may have a broken install."
 141     echo "aufs is the recommended storage driver, although zfs/btrfs/overlay and overlay2 may work as well."
 142     echo "Other storage drivers are known to be problematic."
 143     echo "You can tell what filesystem you are using by running \"docker info\" and looking at the 'Storage Driver' line."
 144     echo
 145     echo "If you wish to continue anyway using your existing unsupported storage driver,"
 146     echo "read the source code of launcher and figure out how to bypass this check."
 147     exit 1
 148   fi
 149
 150   # 3. running recommended docker version
 151   test=($($docker_path --version))  # Get docker version string
 152   test=${test[2]//,/}  # Get version alone and strip comma if exists
 153
 154   # At least minimum docker version
 155   if compare_version "${docker_min_version}" "${test}"; then
 156     echo "ERROR: Docker version ${test} not supported, please upgrade to at least ${docker_min_version}, or recommended ${docker_rec_version}"
 157     exit 1
 158   fi
 159
 160   # Recommend newer docker version
 161   if compare_version "${docker_rec_version}" "${test}"; then
 162     echo "WARNING: Docker version ${test} deprecated, recommend upgrade to ${docker_rec_version} or newer."
 163   fi
 164
 165   # 4. discourse docker image is downloaded
 166   test=`$docker_path images | awk '{print $1 ":" $2 }' | grep "$image"`
 167
 168   if [ -z "$test" ]; then
 169     echo
 170     echo "WARNING: We are about to start downloading the Discourse base image"
 171     echo "This process may take anywhere between a few minutes to an hour, depending on your network speed"
 172     echo
 173     echo "Please be patient"
 174     echo
 175   fi
 176
 177   # 5. running recommended git version
 178   test=($($git_path --version))  # Get git version string
 179   test=${test[2]//,/}  # Get version alone and strip comma if exists
 180
 181   # At least minimum version
 182   if compare_version "${git_min_version}" "${test}"; then
 183     echo "ERROR: Git version ${test} not supported, please upgrade to at least ${git_min_version}, or recommended ${git_rec_version}"
 184     exit 1
 185   fi
 186
 187   # Recommend best version
 188   if compare_version "${git_rec_version}" "${test}"; then
 189     echo "WARNING: Git version ${test} deprecated, recommend upgrade to ${git_rec_version} or newer."
 190   fi
 191
 192   # 6. able to attach stderr / out / tty
 193   test=`$docker_path run $user_args -i --rm -a stdout -a stderr $image echo working`
 194   if [[ "$test" =~ "working" ]] ; then : ; else
 195     echo "Your Docker installation is not working correctly"
 196     echo
 197     echo "See: https://meta.discourse.org/t/docker-error-on-bootstrap/13657/18?u=sam"
 198     exit 1
 199   fi
 200
 201   # 7. enough space for the bootstrap on docker folder
 202   folder=`$docker_path info --format '{{.DockerRootDir}}'`
 203   safe_folder=${folder:-/var/lib/docker}
 204   test=$(($(stat -f --format="%a*%S" $safe_folder)/1024**3 < 5))
 205   if [[ $test -ne 0 ]] ; then
 206     echo "You have less than 5GB of free space on the disk where $safe_folder is located. You will need more space to continue"
 207     df -h $safe_folder
 208     echo
 209     read -p "Would you like to attempt to recover space by cleaning docker images and containers in the system?(y/N)" -n 1 -r
 210     echo
 211     if [[ $REPLY =~ ^[Yy]$ ]]
 212     then
 213       docker system prune
 214       echo "If the cleanup was successful, you may try again now"
 215     fi
 216     exit 1
 217   fi
 218 }
 219
 220
 221 if [ -z "$SKIP_PREREQS" ] && [ "$command" != "cleanup" ]; then
 222   check_prereqs
 223 fi
 224
 225 host_run() {
 226   read -r -d '' env_ruby << 'RUBY'
 227   require 'yaml'
 228
 229   input = STDIN.readlines.join
 230   yaml = YAML.load(input)
 231
 232   if host_run = yaml['host_run']
 233     params = yaml['params'] || {}
 234     host_run.each do |run|
 235       params.each do |k,v|
 236         run = run.gsub("$#{k}", v)
 237       end
 238       STDOUT.write "#{run}--SEP--"
 239     end
 240   end
 241 RUBY
 242
 243   host_run=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e "$env_ruby"`
 244
 245   while [ "$host_run" ] ; do
 246     iter=${host_run%%--SEP--*}
 247     echo
 248     echo "Host run: $iter"
 249     $iter || exit 1
 250     echo
 251     host_run="${host_run#*--SEP--}"
 252   done
 253 }
 254
 255
 256 set_volumes() {
 257   volumes=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 258         "require 'yaml'; puts YAML.load(STDIN.readlines.join)['volumes'].map{|v| '-v ' << v['volume']['host'] << ':' << v['volume']['guest'] << ' '}.join"`
 259 }
 260
 261 set_links() {
 262     links=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 263         "require 'yaml'; puts YAML.load(STDIN.readlines.join)['links'].map{|l| '--link ' << l['link']['name'] << ':' << l['link']['alias'] << ' '}.join"`
 264 }
 265
 266 find_templates() {
 267     local templates=`cat $1 | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 268       "require 'yaml'; puts YAML.load(STDIN.readlines.join)['templates']"`
 269
 270     local arrTemplates=${templates// / }
 271
 272     if [ ! -z "$templates" ]; then
 273       for template in "${arrTemplates[@]}"
 274       do
 275         local nested_templates=$(find_templates $template)
 276
 277         if [ ! -z "$nested_templates" ]; then
 278           templates="$templates $nested_templates"
 279         fi
 280       done
 281
 282       echo $templates
 283     else
 284       echo ""
 285     fi
 286 }
 287
 288 set_template_info() {
 289     templates=$(find_templates $config_file)
 290
 291     arrTemplates=(${templates// / })
 292     config_data=$(cat $config_file)
 293
 294     input="hack: true"
 295
 296     for template in "${arrTemplates[@]}"
 297     do
 298       [ ! -z $template ] && {
 299         input="$input _FILE_SEPERATOR_ $(cat $template)"
 300       }
 301     done
 302
 303     # we always want our config file last so it takes priority
 304     input="$input _FILE_SEPERATOR_ $config_data"
 305
 306     read -r -d '' env_ruby << 'RUBY'
 307     require 'yaml'
 308
 309     input=STDIN.readlines.join
 310     # default to UTF-8 for the dbs sake
 311     env = {'LANG' => 'en_US.UTF-8'}
 312     input.split('_FILE_SEPERATOR_').each do |yml|
 313        yml.strip!
 314        begin
 315          env.merge!(YAML.load(yml)['env'] || {})
 316        rescue Psych::SyntaxError => e
 317         puts e
 318         puts "*ERROR."
 319        rescue => e
 320         puts yml
 321         p e
 322        end
 323     end
 324     puts env.map{|k,v| "-e\n#{k}=#{v}" }.join("\n")
 325 RUBY
 326
 327     raw=`exec echo "$input" | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e "$env_ruby"`
 328
 329     env=()
 330     ok=1
 331     while read i; do
 332       if [ "$i" == "*ERROR." ]; then
 333         ok=0
 334       elif [ -n "$i" ]; then
 335         env[${#env[@]}]=$i
 336       fi
 337     done <<< "$raw"
 338
 339     if [ "$ok" -ne 1 ]; then
 340       echo "${env[@]}"
 341       echo "YAML syntax error. Please check your containers/*.yml config files."
 342       exit 1
 343     fi
 344
 345     read -r -d '' labels_ruby << 'RUBY'
 346     require 'yaml'
 347
 348     input=STDIN.readlines.join
 349     # default to UTF-8 for the dbs sake
 350     labels = {}
 351     input.split('_FILE_SEPERATOR_').each do |yml|
 352        yml.strip!
 353        begin
 354          labels.merge!(YAML.load(yml)['labels'] || {})
 355        rescue Psych::SyntaxError => e
 356         puts e
 357         puts "*ERROR."
 358        rescue => e
 359         puts yml
 360         p e
 361        end
 362     end
 363     puts labels.map{|k,v| "-l\n#{k}=#{v}" }.join("\n")
 364 RUBY
 365
 366     raw=`exec echo "$input" | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e "$labels_ruby"`
 367
 368     labels=()
 369     ok=1
 370     while read i; do
 371       if [ "$i" == "*ERROR." ]; then
 372         ok=0
 373       elif [ -n "$i" ]; then
 374         labels[${#labels[@]}]=$i
 375       fi
 376     done <<< "$raw"
 377
 378     if [ "$ok" -ne 1 ]; then
 379       echo "${labels[@]}"
 380       echo "YAML syntax error. Please check your containers/*.yml config files."
 381       exit 1
 382     fi
 383 }
 384
 385 if [ -z $docker_path ]; then
 386   install_docker
 387 fi
 388
 389 [ "$command" == "cleanup" ] && {
 390   echo
 391   echo "The following command will"
 392   echo "- Delete all docker images for old containers"
 393   echo "- Delete all stopped and orphan containers"
 394   echo
 395   read -p "Are you sure (Y/n): " -n 1 -r && echo
 396   if [[ $REPLY =~ ^[Yy]$ || ! $REPLY ]]
 397     then
 398       space=$(df /var/lib/docker | awk '{ print $4 }' | grep -v Available)
 399       echo "Starting Cleanup (bytes free $space)"
 400
 401       STATE_DIR=./.gc-state scripts/docker-gc
 402
 403       space=$(df /var/lib/docker | awk '{ print $4 }' | grep -v Available)
 404       echo "Finished Cleanup (bytes free $space)"
 405
 406     else
 407       exit 1
 408   fi
 409   exit 0
 410 }
 411
 412 if [ -z "$command" -a -z "$config" ]; then
 413   usage
 414 fi
 415
 416 if [ ! "$command" == "setup" ]; then
 417   if [[ ! -e $config_file ]]; then
 418     echo "Config file was not found, ensure $config_file exists"
 419     echo
 420     echo "Available configs ( `cd containers && ls -dm *.yml | tr -s '\n' ' ' | awk '{ gsub(/\.yml/, ""); print }'`)"
 421     exit 1
 422   fi
 423 fi
 424
 425 docker_version=($($docker_path --version))
 426 docker_version=${test[2]//,/}
 427 restart_policy=${restart_policy:---restart=always}
 428
 429 set_existing_container(){
 430   existing=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 431 }
 432
 433 run_stop() {
 434
 435   set_existing_container
 436
 437   if [ ! -z $existing ]
 438      then
 439        (
 440         set -x
 441         $docker_path stop -t 10 $config
 442        )
 443      else
 444        echo "$config was not started !"
 445        exit 1
 446   fi
 447 }
 448
 449 set_run_image() {
 450   run_image=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 451     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['run_image']"`
 452
 453   if [ -z "$run_image" ]; then
 454     run_image="$local_discourse/$config"
 455   fi
 456 }
 457
 458 set_boot_command() {
 459   boot_command=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 460     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['boot_command']"`
 461
 462   if [ -z "$boot_command" ]; then
 463
 464     no_boot_command=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 465       "require 'yaml'; puts YAML.load(STDIN.readlines.join)['no_boot_command']"`
 466
 467     if [ -z "$no_boot_command" ]; then
 468       boot_command="/sbin/boot"
 469     fi
 470   fi
 471 }
 472
 473 run_start() {
 474
 475    existing=`$docker_path ps | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 476    echo $existing
 477    if [ ! -z $existing ]
 478    then
 479      echo "Nothing to do, your container has already started!"
 480      exit 0
 481    fi
 482
 483    existing=`$docker_path ps -a | awk '{ print $1, $(NF) }' | grep " $config$" | awk '{ print $1 }'`
 484    if [ ! -z $existing ]
 485    then
 486      echo "starting up existing container"
 487      (
 488        set -x
 489        $docker_path start $config
 490      )
 491      exit 0
 492    fi
 493
 494    host_run
 495
 496    ports=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 497          "require 'yaml'; puts YAML.load(STDIN.readlines.join)['expose'].map{|p| \"-p #{p}\"}.join(' ')"`
 498
 499    docker_args=`cat $config_file | $docker_path run $user_args --rm -i -a stdout -a stdin $image ruby -e \
 500           "require 'yaml'; puts YAML.load(STDIN.readlines.join)['docker_args']"`
 501
 502    set_template_info
 503    set_volumes
 504    set_links
 505    set_run_image
 506    set_boot_command
 507
 508    # get hostname and settings from container configuration
 509    for envar in "${env[@]}"
 510    do
 511      if [[ $envar == DOCKER_USE_HOSTNAME* ]] || [[ $envar == DISCOURSE_HOSTNAME* ]]
 512      then
 513        # use as environment variable
 514        eval $envar
 515      fi
 516    done
 517
 518    (
 519      hostname=`hostname -s`
 520      # overwrite hostname
 521      if [ "$DOCKER_USE_HOSTNAME" = "true" ]
 522      then
 523        hostname=$DISCOURSE_HOSTNAME
 524      else
 525        hostname=$hostname-$config
 526      fi
 527
 528      # we got to normalize so we only have allowed strings, this is more comprehensive but lets see how bash does first
 529      # hostname=`$docker_path run $user_args --rm $image ruby -e 'print ARGV[0].gsub(/[^a-zA-Z-]/, "-")' $hostname`
 530      # docker added more hostname rules
 531      hostname=${hostname//_/-}
 532
 533
 534      if [ -z "$SKIP_MAC_ADDRESS" ] ; then
 535       mac_address="--mac-address $($docker_path run $user_args -i --rm -a stdout -a stderr $image /bin/sh -c "echo $hostname | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/'")"
 536      fi
 537
 538      set -x
 539      $docker_path run $links $attach_on_run $restart_policy "${env[@]}" "${labels[@]}" -h "$hostname" \
 540         -e DOCKER_HOST_IP="$docker_ip" --name $config -t $ports $volumes $mac_address $docker_args $user_args \
 541         $run_image $boot_command
 542
 543    )
 544    exit 0
 545
 546 }
 547
 548
 549 run_bootstrap() {
 550
 551   # I got no frigging clue what this does, ask Sam Saffron. It RUNS STUFF ON THE HOST I GUESS?
 552   host_run
 553
 554   # Is the image available?
 555   # If not, pull it here so the user is aware what's happening.
 556   $docker_path history $image >/dev/null 2>&1 || $docker_path pull $image
 557
 558   set_template_info
 559
 560   base_image=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 561     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['base_image']"`
 562
 563   update_pups=`cat $config_file | $docker_path run $user_args --rm -i -a stdin -a stdout $image ruby -e \
 564     "require 'yaml'; puts YAML.load(STDIN.readlines.join)['update_pups']"`
 565
 566   if [[ ! X"" = X"$base_image" ]]; then
 567     image=$base_image
 568   fi
 569
 570   set_volumes
 571   set_links
 572
 573   rm -f $cidbootstrap
 574
 575   run_command="cd /pups &&"
 576   if [[ ! "false" =  $update_pups ]]; then
 577     run_command="$run_command git pull &&"
 578   fi
 579   run_command="$run_command /pups/bin/pups --stdin"
 580
 581   echo $run_command
 582
 583   unset ERR
 584   (exec echo "$input" | $docker_path run $user_args $links "${env[@]}" -e DOCKER_HOST_IP="$docker_ip" --cidfile $cidbootstrap -i -a stdin -a stdout -a stderr $volumes $image \
 585     /bin/bash -c "$run_command") || ERR=$?
 586
 587   unset FAILED
 588   # magic exit code that indicates a retry
 589   if [[ "$ERR" == 77 ]]; then
 590     $docker_path rm `cat $cidbootstrap`
 591     rm $cidbootstrap
 592     exit 77
 593   elif [[ "$ERR" > 0 ]]; then
 594     FAILED=TRUE
 595   fi
 596
 597   if [[ $FAILED = "TRUE" ]]; then
 598     if [[ ! -z "$DEBUG" ]]; then
 599       $docker_path commit `cat $cidbootstrap` $local_discourse/$config-debug || echo 'FAILED TO COMMIT'
 600       echo "** DEBUG ** Maintaining image for diagnostics $local_discourse/$config-debug"
 601     fi
 602
 603     $docker_path rm `cat $cidbootstrap`
 604     rm $cidbootstrap
 605     echo "** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one"
 606     exit 1
 607   fi
 608
 609   sleep 5
 610
 611   $docker_path commit `cat $cidbootstrap` $local_discourse/$config || echo 'FAILED TO COMMIT'
 612   $docker_path rm `cat $cidbootstrap` && rm $cidbootstrap
 613 }
 614
 615
 616
 617 case "$command" in
 618   bootstrap)
 619       run_bootstrap
 620       echo "Successfully bootstrapped, to startup use ./launcher start $config"
 621       exit 0
 622       ;;
 623
 624   enter)
 625       exec $docker_path exec -it $config /bin/bash --login
 626       ;;
 627
 628   stop)
 629       run_stop
 630       exit 0
 631       ;;
 632
 633   logs)
 634
 635       $docker_path logs $config
 636       exit 0
 637       ;;
 638
 639   restart)
 640       run_stop
 641       run_start
 642       exit 0
 643       ;;
 644
 645   start)
 646       run_start
 647       exit 0
 648       ;;
 649
 650   rebuild)
 651       if [ "$(git symbolic-ref --short HEAD)" == "master" ]; then
 652         echo "Ensuring launcher is up to date"
 653
 654         git remote update
 655
 656         LOCAL=$(git rev-parse @)
 657         REMOTE=$(git rev-parse @{u})
 658         BASE=$(git merge-base @ @{u})
 659
 660         if [ $LOCAL = $REMOTE ]; then
 661           echo "Launcher is up-to-date"
 662
 663         elif [ $LOCAL = $BASE ]; then
 664           echo "Updating Launcher"
 665           git pull || (echo 'failed to update' && exit 1)
 666
 667           for (( i=${#BASH_ARGV[@]}-1,j=0; i>=0,j<${#BASH_ARGV[@]}; i--,j++ ))
 668           do
 669             args[$j]=${BASH_ARGV[$i]}
 670           done
 671           exec /bin/bash $0 "${args[@]}" # $@ is empty, because of shift at the beginning. Use BASH_ARGV instead.
 672
 673         elif [ $REMOTE = $BASE ]; then
 674           echo "Your version of Launcher is ahead of origin"
 675
 676         else
 677           echo "Launcher has diverged source, this is only expected in Dev mode"
 678         fi
 679
 680       fi
 681
 682       set_existing_container
 683
 684       if [ ! -z $existing ]
 685         then
 686           echo "Stopping old container"
 687           (
 688             set -x
 689             $docker_path stop -t 10 $config
 690           )
 691       fi
 692
 693       run_bootstrap
 694
 695       if [ ! -z $existing ]
 696         then
 697           echo "Removing old container"
 698           (
 699             set -x
 700             $docker_path rm $config
 701           )
 702       fi
 703
 704       run_start
 705       exit 0
 706       ;;
 707
 708
 709   destroy)
 710       (set -x; $docker_path stop -t 10 $config && $docker_path rm $config) || (echo "$config was not found" && exit 0)
 711       exit 0
 712       ;;
 713 esac
 714
 715 usage