ci: run lambda integration tests via Docker Compose

- Add custom cargo-lambda runtime with containerized lambda runtime
- Add Dockerfile.lambda-runtime to build minimal cargo-lambda image
- Use docker-compose to start runtime with healthcheck
- Simplify CI workflow: remove custom container setup, lint job

Author: JohnBasrai

.github/workflows/ci.yml

@@ -13,20 +13,15 @@ jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
-    container:
-      image: ghcr.io/johnbasrai/cr8s/rust-dev:1.83.0-rev6
-      credentials:
-        username: ${{ github.actor }}
-        password: ${{ secrets.GITHUB_TOKEN }}
 
     steps:
     - name: Checkout code
       uses: actions/checkout@v4
 
-    - name: Show Rust version
-      run: |
-        rustc --version
-        cargo --version
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        components: rustfmt
 
     - name: Cache Cargo dependencies
       uses: actions/cache@v4
@@ -47,60 +42,17 @@ jobs:
     - name: Build release
       run: cargo build --release --quiet
 
-    - name: Run unit tests only
-      run: cargo test --release --quiet --lib --bins
-
-    - name: Ensure cargo-lambda 1.8.5 is installed
-      env:
-        CARGO_HOME: /home/runner/.cargo
-        PATH: /home/runner/.cargo/bin:${{ env.PATH }}
-      run: |
-        echo "PATH=$PATH"
-        if ! command -v cargo-lambda &> /dev/null; then
-            cargo install cargo-lambda --version 1.8.5
-        fi
+    - name: Run tests
+      run: cargo test --release --quiet
 
-    - name: Start lambda runtime in background
-      run: cargo lambda start --release &
-      env:
-        RUST_LOG: info
+    - name: Build and start lambda runtime
+      run: docker compose up -d --build
 
-    - name: Wait for lambda runtime to be ready
-      run: sleep 5
+    - name: Wait for lambda healthcheck
+      run: |
+        for i in {1..20}; do
+          curl -sSf http://localhost:9000 && break || sleep 3
+        done
 
     - name: Run integration tests
-      run: cargo test --quiet --test integration_tests --release
-      env:
-        RUST_LOG: info
-
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-    container:
-      image: ghcr.io/johnbasrai/cr8s/rust-dev:1.83.0-rev6
-      credentials:
-        username: ${{ github.actor }}
-        password: ${{ secrets.GITHUB_TOKEN }}
-
-    steps:
-    - name: Checkout code
-      uses: actions/checkout@v4
-
-    - name: Cache Cargo dependencies
-      uses: actions/cache@v4
-      with:
-        path: |
-          ~/.cargo/bin/
-          ~/.cargo/registry/index/
-          ~/.cargo/registry/cache/
-          ~/.cargo/git/db/
-          target/
-        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-cargo-
-
-    - name: Run Clippy
-      run: cargo clippy --quiet --all-targets --all-features -- -D warnings
-
-    - name: Run audit & outdated
-      run: cargo audit || cargo outdated || true
+      run: cargo test --test integration_tests --release

Dockerfile.lambda-runtime

@@ -0,0 +1,24 @@
+FROM rust:1.83-slim
+
+# Install system deps for building Rust packages and running cargo-lambda
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    libssl-dev \
+    pkg-config \
+    curl \
+    ca-certificates \
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Add cargo bin path explicitly
+ENV PATH="/usr/local/cargo/bin:${PATH}"
+
+# Install cargo-lambda
+RUN cargo install cargo-lambda --version 1.8.5 --locked
+
+# Default user
+RUN useradd -m dev
+USER dev
+WORKDIR /app
+
+# Entry point optional
+CMD ["bash"]

docker-compose.yml

@@ -0,0 +1,15 @@
+
+services:
+  lambda:
+    build:
+      context: .
+      dockerfile: Dockerfile.lambda-runtime
+    environment:
+      RUST_LOG=info
+    ports:
+      - "9000:9000"
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:9000"]
+      interval: 5s
+      timeout: 2s
+      retries: 10