add postgres database

Author: raphaeltm

samples/other/metabase/docker-compose.yml

@@ -10,10 +10,31 @@ services:
       interval: 1m30s
       timeout: 30s
       retries: 5
+    environment:
+      MB_DB_TYPE: "postgres"
+      MB_DB_DBNAME: "metabase"
+      MB_DB_PORT: "5432"
+      MB_DB_USER: "metabase"
+      MB_DB_PASS: "metabase"
+      MB_DB_HOST: "raphaeltm-postgres"
     deploy:
       resources:
         reservations:
           cpus: "0.5"
           memory: 1024M
-    # secrets:
-    #   - MB_DB_CONNECTION_URI
+  postgres:
+    image: "postgres:latest"
+    environment:
+      POSTGRES_DB: metabase
+      POSTGRES_USER: metabase
+      POSTGRES_PASSWORD: metabase
+    healthcheck:
+      test: ["CMD", "pg_isready", "-U", "metabase"]
+      interval: 1m30s
+      timeout: 30s
+      retries: 5
+    deploy:
+      resources:
+        reservations:
+          cpus: "0.5"
+          memory: 1024M