Add DevContainer setup for auth-rs

.devcontainer/Dockerfile

@@ -0,0 +1,22 @@
+FROM mcr.microsoft.com/devcontainers/base:bookworm
+
+# Install Rust
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable --profile default --component rustfmt,clippy \
+    && echo 'source $HOME/.cargo/env' >> $HOME/.bashrc
+
+# Install Node.js LTS
+RUN curl -fsSL https://deb.nodesource.com/setup_lts.x | bash - \
+    && apt-get install -y nodejs \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Bun
+RUN curl -fsSL https://bun.sh/install | bash \
+    && echo 'export BUN_INSTALL="$HOME/.bun"' >> $HOME/.bashrc \
+    && echo 'export PATH="$BUN_INSTALL/bin:$PATH"' >> $HOME/.bashrc
+
+ENV CARGO_HOME=/root/.cargo
+ENV RUSTUP_HOME=/root/.rustup
+ENV PATH="/root/.cargo/bin:/root/.bun/bin:${PATH}"
+ENV BUN_INSTALL=/root/.bun
+

.devcontainer/devcontainer.json

@@ -0,0 +1,36 @@
+{
+  "name": "auth-rs DevContainer",
+  "dockerComposeFile": [
+    "docker-compose.yml"
+  ],
+  "service": "dev",
+  "workspaceFolder": "/workspaces/auth-rs",
+  "customizations": {
+    "vscode": {
+      "settings": {
+        "editor.formatOnSave": true,
+        "rust-analyzer.checkOnSave.command": "clippy"
+      },
+      "extensions": [
+        "rust-lang.rust-analyzer",
+        "serayuzgur.crates",
+        "tamasfe.even-better-toml",
+        "svelte.svelte-vscode",
+        "esbenp.prettier-vscode",
+        "dbaeumer.vscode-eslint"
+      ]
+    }
+  },
+  "forwardPorts": [3000, 8000, 27017],
+  "portsAttributes": {
+    "3000": { "label": "Frontend" },
+    "8000": { "label": "Backend" },
+    "27017": { "label": "MongoDB" }
+  },
+  "postCreateCommand": "bun install",
+  "remoteEnv": {
+    "ROCKET_ADDRESS": "0.0.0.0",
+    "ROCKET_DATABASES": "{auth-rs-db={url=\"mongodb://mongodb:27017\"}}",
+    "PUBLIC_API_URL": "http://localhost:8000/api"
+  }
+}

.devcontainer/docker-compose.yml

@@ -0,0 +1,43 @@
+services:
+  dev:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: localhost/auth-rs-dev:latest
+    container_name: auth-rs-dev
+    volumes:
+      - ..:/workspaces/auth-rs:cached
+    command: sleep infinity
+    networks:
+      - devnet
+    depends_on:
+      mongodb:
+        condition: service_healthy
+    environment:
+      - ROCKET_ADDRESS=0.0.0.0
+      - ROCKET_DATABASES={auth-rs-db={url="mongodb://mongodb:27017"}}
+      - PUBLIC_API_URL=http://localhost:8000/api
+    ports:
+      - "3000:3000"
+      - "8000:8000"
+
+  mongodb:
+    image: mongo:latest
+    container_name: auth-rs-dev-mongodb
+    volumes:
+      - mongodb_data:/data/db
+    healthcheck:
+      test: ["CMD", "mongosh", "--eval", "db.adminCommand('ping')"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
+    networks:
+      - devnet
+
+volumes:
+  mongodb_data:
+
+networks:
+  devnet:
+    driver: bridge