add dev container

.devcontainer/devcontainer.json

@@ -0,0 +1,19 @@
+{
+    "build": {
+      "dockerfile": "../Dockerfile",
+      "target": "dev"
+    },
+  
+    "customizations": {
+      "vscode": {
+        "extensions": [
+          "dbaeumer.vscode-eslint",
+          "ms-azuretools.vscode-docker"
+        ]
+      }
+    },
+
+    "postStartCommand": "nginx",
+  
+    "appPort": "8080:80"
+  }

Dockerfile

@@ -1 +1,12 @@
-FROM alpine
+FROM alpine AS common
+# Insert here instructions to build your container, both for dev and production
+
+# Example - install a web server
+RUN apk add nginx
+
+FROM common as dev
+# Insert here all the dev only tools you need such as debuggers
+RUN apk add git
+
+FROM common as prod
+# Insert here production only things such as keys or production settings