mastodon: add healthchecks

roles/mastodon/templates/docker-compose.yml

@@ -63,6 +63,8 @@ services:
     stop_signal: SIGINT
     networks:
       backend:
+    healthcheck:
+      test: ['CMD', 'pg_isready', '-U', 'postgres']
     volumes:
       - {{ mastodon_database_location }}:/var/lib/postgresql/data
     restart: always
@@ -73,6 +75,8 @@ services:
     memswap_limit: 768mb
     networks:
       backend:
+    healthcheck:
+      test: ['CMD', 'redis-cli', 'ping']
     volumes:
       - {{ mastodon_redis_location }}:/data
     restart: always
@@ -123,6 +127,8 @@ services:
     networks:
       frontend:
       backend:
+    healthcheck:
+      test: ['CMD-SHELL', 'wget -q --spider --proxy=off localhost:3000/health || exit 1']
     restart: always
     command: bash -c "rm -f /mastodon/tmp/pids/server.pid; bundle exec rails s -p 3000 -b '0.0.0.0'"
 
@@ -134,6 +140,8 @@ services:
     networks:
       frontend:
       backend:
+    healthcheck:
+      test: ['CMD-SHELL', 'wget -q --spider --proxy=off localhost:4000/api/v1/streaming/health || exit 1']
     depends_on:
       - db
       - redis
@@ -153,6 +161,8 @@ services:
     networks:
       frontend:
       backend:
+    healthcheck:
+      test: ['CMD-SHELL', "ps aux | grep '[s]idekiq\ 6' || false"]
     restart: always
     command: bundle exec sidekiq