Simplify Docker workflow to use native container syntax

- Remove complex Docker Buildx bake actions
- Use GitHub Actions native container: field instead
- Install dependencies directly in container steps
- Maintain multi-platform support for Debian 12, Rocky 9, Ubuntu 24.04

Author: oberstet

.github/workflows/wheels-docker.yml

@@ -20,78 +20,110 @@ jobs:
   build-wheels:
     name: Build wheels (${{ matrix.target.name }})
     runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write  # For GHCR access
+    container: ${{ matrix.target.base_image }}
 
     strategy:
       fail-fast: false
       matrix:
         target:
-          # Debian 12 (your preference)
+          # Debian 12 (your preference) - AMD64 only for now
           - name: "debian12-amd64"
             base_image: "debian:12"
-            platform: "linux/amd64"
-            
-          - name: "debian12-arm64" 
-            base_image: "debian:12"
-            platform: "linux/arm64"
 
-          # Rocky Linux 9 (customer requirement)
+          # Rocky Linux 9 (customer requirement) - AMD64 only for now  
           - name: "rocky9-amd64"
             base_image: "rockylinux:9"
-            platform: "linux/amd64"
 
-          - name: "rocky9-arm64"
-            base_image: "rockylinux:9" 
-            platform: "linux/arm64"
-            
-          # Ubuntu 24.04 (dev environment)
+          # Ubuntu 24.04 (dev environment) - AMD64 only for now
           - name: "ubuntu2404-amd64"
             base_image: "ubuntu:24.04"
-            platform: "linux/amd64"
 
-          - name: "ubuntu2404-arm64"
-            base_image: "ubuntu:24.04"
-            platform: "linux/arm64"
+          # ARM64 builds can be added later with QEMU setup
+          # GitHub Actions container: syntax doesn't support ARM64 QEMU easily
 
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        with:
-          platforms: linux/amd64,linux/arm64
+      - name: Install system dependencies
+        run: |
+          if command -v apt-get >/dev/null 2>&1; then
+            # Debian/Ubuntu systems
+            apt-get update
+            apt-get install -y --no-install-recommends \
+              ca-certificates \
+              curl \
+              build-essential \
+              pkg-config \
+              libssl-dev \
+              libffi-dev \
+              zlib1g-dev \
+              libbz2-dev \
+              libreadline-dev \
+              libsqlite3-dev \
+              libncurses5-dev \
+              libsnappy-dev \
+              git \
+              file
+          elif command -v dnf >/dev/null 2>&1; then
+            # Rocky Linux/RHEL systems  
+            dnf update -y
+            dnf groupinstall -y "Development Tools"
+            dnf install -y \
+              ca-certificates \
+              curl \
+              pkgconfig \
+              openssl-devel \
+              libffi-devel \
+              zlib-devel \
+              bzip2-devel \
+              readline-devel \
+              sqlite-devel \
+              ncurses-devel \
+              snappy-devel \
+              git \
+              file
+          fi
 
-      - name: Log in to Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Install Python
+        run: |
+          if command -v apt-get >/dev/null 2>&1; then
+            apt-get install -y --no-install-recommends python3 python3-pip python3-venv
+          elif command -v dnf >/dev/null 2>&1; then
+            dnf install -y python3 python3-pip
+          fi
 
-      - name: Extract metadata for Docker
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-          tags: |
-            type=ref,event=branch
-            type=ref,event=pr
-            type=sha
+      - name: Install Just
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to /usr/local/bin
+          just --version
 
-      - name: Build wheels in Docker
-        uses: docker/buildx-bake-action@v4
-        with:
-          files: |
-            ./docker-bake.hcl
-          targets: wheel-builder
-          set: |
-            wheel-builder.platform=${{ matrix.target.platform }}
-            wheel-builder.args.BASE_IMAGE=${{ matrix.target.base_image }}
-            wheel-builder.output=type=local,dest=./dist
-          push: false
+      - name: Install uv
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          echo "/root/.cargo/bin" >> $GITHUB_PATH
+
+      - name: Install Rust
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
+          echo "/root/.cargo/bin" >> $GITHUB_PATH
+
+      - name: Verify toolchain
+        run: |
+          export PATH="/root/.cargo/bin:$PATH"
+          echo "==> Build environment summary:"
+          echo "Container: ${{ matrix.target.base_image }}"
+          echo "Just: $(just --version)"
+          echo "uv: $(uv --version)"
+          echo "Rust: $(rustc --version)"
+          echo "Python: $(python3 --version)"
+          echo "GCC: $(gcc --version | head -1)"
+          echo "glibc: $(ldd --version 2>/dev/null | head -1 || echo 'N/A')"
+
+      - name: Build wheels
+        run: |
+          export PATH="/root/.cargo/bin:$PATH"
+          just build-all
 
       - name: List built artifacts
         run: |