Add devcontainer

.devcontainer/Dockerfile

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+# [Choice] Node.js version (use -bullseye variants on local arm64/Apple Silicon): 18, 16, 14, 18-bullseye, 16-bullseye, 14-bullseye, 18-buster, 16-buster, 14-buster
+ARG VARIANT=16-bullseye
+FROM mcr.microsoft.com/vscode/devcontainers/typescript-node:0-${VARIANT}
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [Optional] Uncomment if you want to install an additional version of node using nvm
+# ARG EXTRA_NODE_VERSION=10
+# RUN su node -c "source /usr/local/share/nvm/nvm.sh && nvm install ${EXTRA_NODE_VERSION}"
+
+# [Optional] Uncomment if you want to install more global node packages
+# RUN su node -c "npm install -g <your-package-list -here>"

.devcontainer/base.Dockerfile

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+# [Choice] Node.js version (use -bullseye variants on local arm64/Apple Silicon): 18, 16, 14, 18-bullseye, 16-bullseye, 14-bullseye, 18-buster, 16-buster, 14-buster
+ARG VARIANT=16-bullseye
+FROM mcr.microsoft.com/vscode/devcontainers/javascript-node:0-${VARIANT}
+
+# Install tslint, typescript. eslint is installed by javascript image
+ARG NODE_MODULES="tslint-to-eslint-config typescript"
+COPY library-scripts/meta.env /usr/local/etc/vscode-dev-containers
+RUN su node -c "umask 0002 && npm install -g ${NODE_MODULES}" \
+    && npm cache clean --force > /dev/null 2>&1
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [Optional] Uncomment if you want to install an additional version of node using nvm
+# ARG EXTRA_NODE_VERSION=10
+# RUN su node -c "source /usr/local/share/nvm/nvm.sh && nvm install ${EXTRA_NODE_VERSION}"

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.241.1/containers/typescript-node
+{
+	"name": "Pi-helper",
+	"dockerComposeFile": "docker-compose.yml",
+	"service": "app",
+	// Configure tool-specific properties.
+	"customizations": {
+		// Configure properties specific to VS Code.
+		"vscode": {
+			// Add the IDs of extensions you want installed when the container is created.
+			"extensions": [
+				"dbaeumer.vscode-eslint",
+				"PWABuilder.pwa-studio"
+			]
+		}
+	},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	"forwardPorts": [
+		3000
+	],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "yarn install",
+
+	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "node"
+}

.devcontainer/docker-compose.yml

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+version: '3'
+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        VARIANT: 16-bullseye
+    environment:
+      PIHELPER_PIHOLE_HOST: 'http://pihole'
+      PIHELPER_API_KEY: 5536c470d038c11793b535e8c1176817c001d6f20a4704fa7908939be82e2922
+    volumes:
+      - ..:/workspace:cached
+    # Overrides default command so things don't shut down after the process ends.
+    command: /bin/sh -c "while sleep 1000; do :; done"  
+    network_mode: service:pihole
+    user: node
+  pihole:
+    image: pihole/pihole
+    environment:
+      WEBPASSWORD: pihole
+    restart: unless-stopped