update devcontainer and docker-compose configurations; upgrade images and fix network references

.devcontainer/devcontainer.json

@@ -6,5 +6,6 @@
     ],
     "build": {
         "dockerfile": "Dockerfile"
-    }
+    },
+    "postAttachCommand": "docker context create prod --docker \"host=ssh://user@62.210.212.10\""
 }