merges docker optimizations from develop branch

docker-compose.development.yml

@@ -0,0 +1,20 @@
+version: '2'
+
+services:
+
+  db:
+    cpu_shares: 2
+    cpuset: 0-1
+
+  app:
+    environment:
+      - VIRTUAL_HOST=tasks.dev
+
+  web:
+    image: jwilder/nginx-proxy
+    ports:
+      - 80:80
+    volumes:
+      - /var/run/docker.sock:/tmp/docker.sock:ro
+    networks:
+      - code_network

docker-compose.production.yml

@@ -2,26 +2,21 @@ version: '2'
 
 services:
 
+  db:
+    cpu_shares: 8
+    cpuset: 0-8
+
   app:
     command: ["true"]
 
-# https://github.com/vincetse/docker-compose-zero-downtime-deployment
   app_green:
-    container_name: app_green
-    ports:
-      - 3000:6543
     environment:
-      - VIRTUAL_PORT=3000
       - VIRTUAL_HOST=tasks.hotosm.org,tasks-green.hotosm.org
     extends:
       service: app
 
   app_blue:
-    container_name: app_blue
-    ports:
-      - 3001:6543
     environment:
-      - VIRTUAL_PORT=3001
       - VIRTUAL_HOST=tasks.hotosm.org,tasks-blue.hotosm.org
     extends:
       service: app

docker-compose.staging.yml

@@ -5,23 +5,14 @@ services:
   app:
     command: ["true"]
 
-# https://github.com/vincetse/docker-compose-zero-downtime-deployment
   app_green:
-    container_name: app_green
-    ports:
-      - 3000:6543
     environment:
-      - VIRTUAL_PORT=3000
       - VIRTUAL_HOST=tasks-staging.hotosm.org,tasks-staging-green.hotosm.org
     extends:
       service: app
 
   app_blue:
-    container_name: app_blue
-    ports:
-      - 3001:6543
     environment:
-      - VIRTUAL_PORT=3001
       - VIRTUAL_HOST=tasks-staging.hotosm.org,tasks-staging-blue.hotosm.org
     extends:
       service: app

docker-compose.yml

@@ -1,44 +1,32 @@
 version: '2'
 
 services:
-# https://hub.docker.com/_/postgres/
-# https://store.docker.com/images/022689bf-dfd8-408f-9e1c-19acac32e57b
 
   db:
     build:
       context: ./
       dockerfile: Dockerfile.db
-    container_name: db
     restart: always
     volumes:
       - postgres-db-volume:/data/postgres
       - /tmp:/srv
-    cpu_shares: 8
-    cpuset: 0-8
     networks:
       - database_network
 
   app:
     build:
       context: ./
       dockerfile: Dockerfile.app
-    container_name: app
-    environment:
-      - VIRTUAL_HOST=tasks-staging.hotosm.org
     restart: always
-    # https://docs.docker.com/compose/startup-order/
     command: ["./wait-for-postgres.sh", "db", "./startup-tm.sh"]
+    expose:
+      - 6543
+    environment:
+      - VIRTUAL_PORT=6543
     networks:
       - database_network
       - code_network
 
-# cpuset, such as `docker run –cpuset-cpus`, allows users to specify
-# which CPUs to allow execution in. accepts a string that looks like
-# 0
-# 0,1
-# 0-2
-# cpu_shares
-
 volumes:
   postgres-db-volume: