Spec: add `init: true` to jenkins builds

This will allow use to rely upon builtin "tini" functionality
without needing to manually invoke it like before. This should
ensure that stopping containers is faster across the board.

Change-Id: I101770a6ddcf5cdc216b612bde83156d40198127
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/240309
Reviewed-by: Aaron Ogata <aogata@instructure.com>
Reviewed-by: James Butters <jbutters@instructure.com>
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
QA-Review: James Butters <jbutters@instructure.com>
Product-Review: James Butters <jbutters@instructure.com>

config/docker-compose.override.yml.example

@@ -46,6 +46,7 @@ services:
     environment: &BASE-ENV
       ENCRYPTION_KEY: facdd3a131ddd8988b14f6e4e01039c93cfa0160
       RAILS_ENV: development
+    init: true
 
   webpack:
     <<: *BASE

docker-compose.new-jenkins-flakey-spec-catcher.yml

@@ -4,4 +4,4 @@ services:
   canvas:
     volumes:
       - "./.git:/usr/src/app/.git"
-
+    init: true

docker-compose.new-jenkins-karma.yml

@@ -8,3 +8,4 @@ services:
       dockerfile: ./build/new-jenkins/js/Dockerfile-karma
       args:
         image_name: $PATCHSET_TAG
+    init: true

docker-compose.new-jenkins-selenium.yml

@@ -18,6 +18,7 @@ services:
     environment:
       SCREEN_WIDTH: 1680
       SCREEN_HEIGHT: 1050
+    init: true
 
   canvasrceapi:
     image: starlord.inscloudgate.net/jeremyp/canvas-rce-api_web
@@ -29,3 +30,4 @@ services:
       PASSENGER_MIN_INSTANCES: 2
       PASSENGER_MAX_POOL_SIZE: 6
       NGINX_WORKER_CONNECTIONS: 2048
+    init: true

docker-compose.new-jenkins.canvas.yml

@@ -7,3 +7,4 @@ services:
       - .git:/usr/src/app/.git
     environment:
       RAILS_ENV: test
+    init: true

docker-compose.new-jenkins.consumer.yml

@@ -7,8 +7,9 @@ services:
       - redis
     environment:
       RAILS_ENV: development
-    ports: 
+    ports:
       - "8181:80"
+    init: true
 
   jobs:
     image: $PATCHSET_TAG
@@ -18,11 +19,14 @@ services:
     environment:
       RAILS_ENV: development
     command: bundle exec script/delayed_job run
+    init: true
 
   postgres:
     image: starlord.inscloudgate.net/jenkins/postgis:$POSTGRES-2.5
     environment:
       POSTGRES_PASSWORD: sekret
+    init: true
 
   redis:
     image: starlord.inscloudgate.net/jenkins/redis:alpine
+    init: true

docker-compose.new-jenkins.multiple-processes.yml

@@ -23,20 +23,25 @@ services:
       - cassandra
       - redis
       - dynamodb
+    init: true
 
   redis:
     image: starlord.inscloudgate.net/jenkins/redis:alpine
+    init: true
 
   postgres:
     image: starlord.inscloudgate.net/jenkins/postgis:$POSTGRES-${POSTGIS:-2.5}
     environment:
       POSTGRES_PASSWORD: sekret
+    init: true
 
   cassandra:
     image: starlord.inscloudgate.net/jenkins/cassandra:2.2
     environment:
       CASSANDRA_START_RPC: 'true'
+    init: true
 
   dynamodb:
     image: starlord.inscloudgate.net/jenkins/dynamodb-local
     command: -jar DynamoDBLocal.jar
+    init: true

docker-compose.new-jenkins.vendored-gems.yml

@@ -4,3 +4,4 @@ services:
   canvas:
     environment:
       DATABASE_URL: postgres://postgres:${POSTGRES_PASSWORD}@postgres:5432/canvas_test
+    init: true

docker-compose.new-jenkins.yml

@@ -25,10 +25,12 @@ services:
       EXCLUDE_TESTS:
       TEST_PATTERN:
     # this will stop passenger from booting so the container isn't running anything at all once up
-    command: /tini -- sleep infinity
+    command: sleep infinity
+    init: true
 
   redis:
     image: starlord.inscloudgate.net/jenkins/redis:alpine
+    init: true
 
   postgres:
     image: starlord.inscloudgate.net/jenkins/postgis:$POSTGRES-${POSTGIS:-2.5}
@@ -37,12 +39,15 @@ services:
 
       # parallel_tests
       DOCKER_PROCESSES:
+    init: true
 
   cassandra:
     image: starlord.inscloudgate.net/jenkins/cassandra:2.2
     environment:
       CASSANDRA_START_RPC: 'true'
+    init: true
 
   dynamodb:
     image: starlord.inscloudgate.net/jenkins/dynamodb-local
     command: -jar DynamoDBLocal.jar #-dbPath /home/dynamodblocal
+    init: true