DM_TMPDIR= <Set this to temporary directory>
DM_TARGETDIR= <Set this to directory where tarballs should land>
-DM_NPM= <Set this to your npm binary>
-DM_PHP= <Set this to your php binary>
-DM_RSYNC= <set this to your rsync binary>
-DM_ZIP= <set this to your zip binary>
+## Optional
+# DM_PHP= <Set this to your php binary> [default: php]
+# DM_RSYNC= <set this to your rsync binary> [default: rsync]
+# DM_ZIP= <set this to your zip binary> [default: zip]
+# DM_NPM= <Set this to your npm binary> [default: npm]
+# DM_NODE= <Set this to your node binary> [default: node]
+# DM_COMPOSER= <Set this to your composer binary> [default: composer]
DM_VERSION= <Set this to whatever the version number should be>
## Git banch/tag name
DM_REF_CORE=master
+DM_REF_BACKDROP=1.x-${DM_REF_CORE}
DM_REF_DRUPAL=7.x-${DM_REF_CORE}
DM_REF_DRUPAL6=6.x-${DM_REF_CORE}
DM_REF_JOOMLA=${DM_REF_CORE}