[dist] Ignore the docker-compose override file

This makes it possible to integrate the building of the frontend
container into compose.

.gitignore

@@ -49,6 +49,7 @@
 /src/backend/pm_to_blib
 /src/backend/sat-solver
 /src/backend/t/tmp
+docker-compose.override.yml
 
 # All the other crap that fits nowhere specifically
 *~

Rakefile

@@ -4,8 +4,12 @@ namespace :docker do
   desc 'Build our development environment'
   task :build do
     begin
-      # Setup the frontend container
-      sh "docker build . -t openbuildservice/frontend --build-arg CONTAINER_USERID=#{CONTAINER_USERID}"
+      sh "echo -e \"# This file is generated by our Rakefile. Do not change it!\" > docker-compose.override.yml"
+      # rubocop:disable Metrics/LineLength
+      sh "echo -e \"version: \'2\'\nservices:\n  frontend:\n    build:\n      args:\n        CONTAINER_USERID: #{CONTAINER_USERID}\" >> docker-compose.override.yml"
+      # rubocop:enable Metrics/LineLength
+      # Build the frontend container
+      sh "docker-compose build frontend"
       # Bootstrap the app
       sh "docker-compose up -d db"
       sh "docker-compose run --no-deps --rm frontend bundle exec rake dev:bootstrap RAILS_ENV=development"

docker-compose.yml

@@ -22,6 +22,8 @@ services:
     command: /obs/contrib/start_development_worker
   frontend:
     image: openbuildservice/frontend
+    build:
+      context: .
     volumes:
       - .:/obs
     ports: