Added devcontainer support

Author: AlexanderYW

.devcontainer/Dockerfile

@@ -0,0 +1,14 @@
+# [Choice] Node.js version: 14, 12, 10
+ARG VARIANT=14
+FROM mcr.microsoft.com/vscode/devcontainers/javascript-node:${VARIANT}
+USER root
+RUN apt-get update
+
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+RUN if [ "$USER_GID" != "1000" ] || [ "$USER_UID" != "1000" ]; then \
+        groupmod --gid $USER_GID node \
+        && usermod --uid $USER_UID --gid $USER_GID node \
+        && chmod -R $USER_UID:$USER_GID /home/node \
+        && chmod -R $USER_UID:root /usr/local/share/nvm /usr/local/share/npm-global; \
+    fi

.devcontainer/devcontainer.json

@@ -0,0 +1,32 @@
+{
+	"name": "Node.js",
+	"build": {
+		"dockerfile": "Dockerfile",
+		// Update 'VARIANT' to pick a Node version: 10, 12, 14
+		"args": { "VARIANT": "14" }
+	},
+
+	// Set *default* container specific settings.json values on container create.
+	"settings": { 
+		"terminal.integrated.shell.linux": "/bin/bash"
+	},
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"dbaeumer.vscode-eslint",
+		"octref.vetur",
+		"liuji-jim.vue",
+		"eamodio.gitlens",
+		"wix.vscode-import-cost",
+		"mrmlnc.vscode-scss"
+	],
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	"forwardPorts": [9000],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "yarn install",
+
+	// Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "node"
+}