Added devcontainer config

Author: dullage

.devcontainer/Dockerfile

@@ -0,0 +1,16 @@
+FROM python:3.11-slim-bullseye
+
+# Install pipenv
+RUN pip install --no-cache-dir pipenv
+
+# Install curl & git
+RUN apt update \ && apt install -y \
+    curl \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Node.js
+RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash \
+    && export NVM_DIR="$HOME/.nvm" \
+    && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" \
+    && nvm install 20

.devcontainer/devcontainer.json

@@ -0,0 +1,38 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/docker-existing-dockerfile
+{
+	"name": "Dev Container",
+	"build": {
+		// Sets the run context to one level up instead of the .devcontainer folder.
+		"context": "..",
+		// Update the 'dockerFile' property if you aren't using the standard 'Dockerfile' filename.
+		"dockerfile": "./Dockerfile"
+	},
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	"forwardPorts": [
+		8080
+	],
+
+	// Uncomment the next line to run commands after the container is created.
+	// "postCreateCommand": "cat /etc/os-release",
+
+	// Configure tool-specific properties.
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"ms-python.python",
+				"ms-azuretools.vscode-docker",
+				"ms-python.black-formatter",
+				"esbenp.prettier-vscode",
+				"Vue.volar"
+			]
+		}
+	}
+
+	// Uncomment to connect as an existing user other than the container default. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "devcontainer"
+}