From 3c1c8f9e802db2303c64ff8388631d484e536331 Mon Sep 17 00:00:00 2001
From: Matt Colyer <matt@colyer.name>
Date: Mon, 26 Oct 2015 21:05:53 -0700
Subject: [PATCH] Pass environment variables to docker container

This change allows arbitrary environment variables to be passed to the
underlying docker container. Useful when using postgres docker
containers which allow for additional configuration on top of the
official postgres image.

See https://github.com/mcolyer/docker-postgres-wale for an example.
---
 README.md | 2 +-
 commands  | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 30f0411..2efc1c4 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ dokku plugin:install https://github.com/dokku/dokku-postgres.git postgres
 ```
 postgres:clone <name> <new-name>  Create container <new-name> then copy data from <name> into <new-name>
 postgres:connect <name>           Connect via psql to a postgres service
-postgres:create <name>            Create a postgres service
+postgres:create <name> <env=val>  Create a postgres service with environment variables
 postgres:destroy <name>           Delete the service and stop its container if there are no links left
 postgres:export <name>            Export a dump of the postgres service database
 postgres:expose <name> [port]     Expose a postgres service on custom port if provided (random port otherwise)
diff --git a/commands b/commands
index 46dcadb..e9f6f07 100755
--- a/commands
+++ b/commands
@@ -31,8 +31,12 @@ case "$1" in
     touch "$LINKS_FILE"
 
     dokku_log_info1 "Starting container"
+    ENVIRONMENT=""
+    for arg in "${@:2}"; do
+     ENVIRONMENT="$ENVIRONMENT -e $arg"
+    done
     SERVICE_NAME=$(get_service_name "$SERVICE")
-    ID=$(docker run --name "$SERVICE_NAME" -v "$SERVICE_ROOT/data:/var/lib/postgresql/data" -e "POSTGRES_PASSWORD=$password" -d --restart always --label dokku=service --label dokku.service=postgres "$PLUGIN_IMAGE:$PLUGIN_IMAGE_VERSION")
+    ID=$(docker run --name "$SERVICE_NAME" -v "$SERVICE_ROOT/data:/var/lib/postgresql/data" $ENVIRONMENT -e "POSTGRES_PASSWORD=$password" -d --restart always --label dokku=service --label dokku.service=postgres "$PLUGIN_IMAGE:$PLUGIN_IMAGE_VERSION")
     echo "$ID" > "$SERVICE_ROOT/ID"
 
     dokku_log_verbose_quiet "Waiting for container to be ready"