Add healthcheck for app container

compose.yml

@@ -44,12 +44,12 @@ services:
         #- "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLForceHost=true"
         #- "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLHost=${DOMAIN}"
         - "coop-cloud.${STACK_NAME}.version=0.6.0+3.1.1"
-    # healthcheck:
-    #   test: ["CMD", "curl", "-f", "http://localhost:3000"]
-    #   interval: 30s
-    #   timeout: 10s
-    #   retries: 10
-    #   start_period: 1m
+    healthcheck:
+      test: "ruby -e \"require 'uri'; require 'net/http'; uri = URI('http://localhost:3000'); res = Net::HTTP.get_response(uri); if res.is_a?(Net::HTTPSuccess) then exit (0) else exit (1) end\""
+      interval: 30s
+      timeout: 10s
+      retries: 6
+      start_period: 5m
 
   db:
     image: postgres:13