compose and K8s file cleanup (#273)

docker-stack.yml

@@ -1,19 +1,18 @@
-version: "3"
+# this file is meant for Docker Swarm stacks only
+# trying it in compose will fail because of multiple replicas trying to bind to the same port
+# Swarm currently does not support Compose Spec, so we'll pin to the older version 3.9
+
+version: "3.9"
+
 services:
 
   redis:
     image: redis:alpine
     networks:
       - frontend
-    deploy:
-      replicas: 1
-      update_config:
-        parallelism: 2
-        delay: 10s
-      restart_policy:
-        condition: on-failure
+
   db:
-    image: postgres:9.4
+    image: postgres:15-alpine
     environment:
       POSTGRES_USER: "postgres"
       POSTGRES_PASSWORD: "postgres"
@@ -21,69 +20,30 @@ services:
       - db-data:/var/lib/postgresql/data
     networks:
       - backend
-    deploy:
-      placement:
-        constraints: [node.role == manager]
+
   vote:
-    image: dockersamples/examplevotingapp_vote:before
+    image: dockersamples/examplevotingapp_vote
     ports:
       - 5000:80
     networks:
       - frontend
-    depends_on:
-      - redis
     deploy:
       replicas: 2
-      update_config:
-        parallelism: 2
-      restart_policy:
-        condition: on-failure
+
   result:
-    image: dockersamples/examplevotingapp_result:before
+    image: dockersamples/examplevotingapp_result
     ports:
       - 5001:80
     networks:
       - backend
-    depends_on:
-      - db
-    deploy:
-      replicas: 1
-      update_config:
-        parallelism: 2
-        delay: 10s
-      restart_policy:
-        condition: on-failure
 
   worker:
     image: dockersamples/examplevotingapp_worker
     networks:
       - frontend
       - backend
-    depends_on:
-      - db
-      - redis
     deploy:
-      mode: replicated
-      replicas: 1
-      labels: [APP=VOTING]
-      restart_policy:
-        condition: on-failure
-        delay: 10s
-        max_attempts: 3
-        window: 120s
-      placement:
-        constraints: [node.role == manager]
-
-  visualizer:
-    image: dockersamples/visualizer:stable
-    ports:
-      - "8080:8080"
-    stop_grace_period: 1m30s
-    volumes:
-      - "/var/run/docker.sock:/var/run/docker.sock"
-    deploy:
-      placement:
-        constraints: [node.role == manager]
+      replicas: 2
 
 networks:
   frontend: