add container configuration

.devcontainer/devcontainer.json

@@ -0,0 +1,21 @@
+{
+		"image":"mcr.microsoft.com/devcontainers/base:dev-ubuntu-20.04",
+		"forwardPorts": [
+			{
+			"containerPort": 8080,
+			"protocol": "tcp"
+			}
+		  ],
+		  "containerEnv": {
+			"NODE_ENV": "development"
+		  },
+		  "initializeCommand": "echo \"init\";",
+		  "postCreateCommand": [
+			"echo \"created\";",
+			"echo \"test\";"
+		  ],
+		  "runArgs": [
+			"-p",
+			"8888:8888"
+		  ]
+		}