Add a way to expose a port without publishing

[discourse_docker.git] / README.md

diff --git a/README.md b/README.md
index cfb1091f5c64437db49471bdd896b09e3c1a1517..9afa70d579a5eb904333e9ffdcef0a99dfe9c602 100644 (file)
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ Placeholder spot for shared volumes with various Discourse containers. You may e
 
 Dockerfiles for Discourse; see [the README](image/README.md) for further details.
 
-The Docker repository will always contain the latest built version at: https://hub.docker.com/r/discourse/discourse/, you should not need to build the base image.
+The Docker repository will always contain the latest built version at: https://hub.docker.com/r/discourse/base/, you should not need to build the base image.
 
 ### Launcher
 
@@ -82,7 +82,7 @@ expose:
   - "127.0.0.1:20080:80"
 ```
 
-Expose port 22 inside the container on port 2222 on ALL local host interfaces. In order to bind to only one interface, you may specify the host's IP address as `([<host_interface>:[host_port]])|(<host_port>):<container_port>[/udp]` as defined in the [docker port binding documentation](http://docs.docker.com/userguide/dockerlinks/)
+Publish port 22 inside the container on port 2222 on ALL local host interfaces. In order to bind to only one interface, you may specify the host's IP address as `([<host_interface>:[host_port]])|(<host_port>):<container_port>[/udp]` as defined in the [docker port binding documentation](http://docs.docker.com/userguide/dockerlinks/). To expose a port without publishing it, specify only the port number (e.g., `80`).
 
 
 #### volumes:
@@ -108,6 +108,32 @@ links:
 Links another container to the current container. This will add `--link postgres:postgres`
 to the options when running the container.
 
+#### environment variables:
+
+Setting environment variables to the current container.
+
+```
+# app.yml
+
+env:
+  DISCOURSE_DB_HOST: some-host
+  DISCOURSE_DB_NAME: {{config}}_discourse
+```
+
+The above will add `-e DISCOURSE_DB_HOST=some-host -e DISCOURSE_DB_NAME=app_discourse` to the options when running the container.
+
+#### labels:
+```
+# app.yml
+
+labels:
+  monitor: 'true'
+  app_name: {{config}}_discourse
+```
+
+Add labels to the current container. The above will add `--l monitor=true -l app_name=dev_discourse` to the options
+when running the container
+
 ### Upgrading Discourse
 
 The Docker setup gives you multiple upgrade options: