apt-ostree/build-oci-image.sh
robojerk d295f9bb4d Major milestone: Complete apt-ostree bootc compatibility and OCI integration
-  Real package installation (replaced mock installation)
-  Real OSTree commit creation from installed packages
-  OCI image creation from both commits and rootfs
-  Full bootc compatibility with proper labels
-  Comprehensive test suite (test-bootc-apt-ostree.sh)
-  Container tool validation (skopeo, podman)
-  Updated compatibility reports for Ubuntu Questing
-  Fixed OCI schema version and field naming issues
-  Temporary directory lifecycle fixes
-  Serde rename attributes for OCI JSON compliance

Ready for Aurora-style workflow deployment!
2025-07-20 21:06:44 +00:00

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#!/bin/bash
echo "=== Building OCI Image with Available Tools ==="
echo
# Check if we have the required tools
echo "1. Checking available tools..."
if command -v oci-image-tool &> /dev/null; then
echo "✅ oci-image-tool found: $(oci-image-tool --version 2>/dev/null || echo 'version unknown')"
else
echo "❌ oci-image-tool not found"
exit 1
fi
if command -v skopeo &> /dev/null; then
echo "✅ skopeo found: $(skopeo --version 2>/dev/null || echo 'version unknown')"
else
echo "❌ skopeo not found"
exit 1
fi
if command -v ostree &> /dev/null; then
echo "✅ ostree found: $(ostree --version | head -1)"
else
echo "❌ ostree not found"
exit 1
fi
echo
# Check if we have the test repository
echo "2. Checking test repository..."
TEST_REPO="/tmp/test-repo"
if [ -d "$TEST_REPO" ]; then
echo "✅ Test repository found at $TEST_REPO"
# Check if we have the test commit
if ostree refs --repo="$TEST_REPO" | grep -q "test/oci/demo"; then
COMMIT_ID=$(ostree rev-parse --repo="$TEST_REPO" test/oci/demo)
echo "✅ Test commit found: $COMMIT_ID"
else
echo "❌ Test commit not found"
exit 1
fi
else
echo "❌ Test repository not found"
exit 1
fi
echo
# Create a temporary directory for the image build
echo "3. Setting up image build..."
BUILD_DIR="/tmp/oci-build-$$"
mkdir -p "$BUILD_DIR"
echo "✅ Created build directory: $BUILD_DIR"
# Checkout the OSTree commit to a temporary directory
echo "4. Checking out OSTree commit..."
CHECKOUT_DIR="$BUILD_DIR/checkout"
ostree checkout --repo="$TEST_REPO" --subpath=/ test/oci/demo "$CHECKOUT_DIR"
if [ $? -eq 0 ]; then
echo "✅ Checked out commit to $CHECKOUT_DIR"
ls -la "$CHECKOUT_DIR"
else
echo "❌ Failed to checkout commit"
exit 1
fi
echo
# Create OCI image structure
echo "5. Creating OCI image structure..."
IMAGE_DIR="$BUILD_DIR/image"
mkdir -p "$IMAGE_DIR"
mkdir -p "$IMAGE_DIR/blobs/sha256"
# Create a simple OCI configuration
echo "6. Creating OCI configuration..."
cat > "$IMAGE_DIR/config.json" << 'EOF'
{
"architecture": "amd64",
"os": "linux",
"created": "2024-01-01T00:00:00Z",
"config": {
"User": "root",
"WorkingDir": "/",
"Env": ["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],
"Entrypoint": null,
"Cmd": null,
"Volumes": {},
"ExposedPorts": {},
"Labels": {
"org.aptostree.demo": "true",
"org.opencontainers.image.title": "apt-ostree-demo",
"org.opencontainers.image.description": "Demo image built with apt-ostree"
}
},
"rootfs": {
"type": "layers",
"diff_ids": []
},
"history": [
{
"created": "2024-01-01T00:00:00Z",
"created_by": "apt-ostree demo",
"comment": "Created by apt-ostree OCI demo"
}
]
}
EOF
echo "✅ Created OCI configuration"
# Create a tar layer from the checkout
echo "7. Creating filesystem layer..."
LAYER_TAR="$BUILD_DIR/layer.tar"
cd "$CHECKOUT_DIR"
tar -cf "$LAYER_TAR" .
if [ $? -eq 0 ]; then
echo "✅ Created layer tar: $LAYER_TAR"
ls -lh "$LAYER_TAR"
else
echo "❌ Failed to create layer tar"
exit 1
fi
# Compress the layer
echo "8. Compressing layer..."
LAYER_GZ="$BUILD_DIR/layer.tar.gz"
gzip -c "$LAYER_TAR" > "$LAYER_GZ"
if [ $? -eq 0 ]; then
echo "✅ Compressed layer: $LAYER_GZ"
ls -lh "$LAYER_GZ"
else
echo "❌ Failed to compress layer"
exit 1
fi
# Calculate SHA256 digest
echo "9. Calculating layer digest..."
LAYER_DIGEST=$(sha256sum "$LAYER_GZ" | cut -d' ' -f1)
LAYER_SIZE=$(stat -c%s "$LAYER_GZ")
echo "✅ Layer digest: sha256:$LAYER_DIGEST"
echo "✅ Layer size: $LAYER_SIZE bytes"
# Copy layer to blobs directory
cp "$LAYER_GZ" "$IMAGE_DIR/blobs/sha256/$LAYER_DIGEST"
echo "✅ Copied layer to blobs directory"
# Update config with layer digest
echo "10. Updating configuration..."
sed -i "s/\"diff_ids\": \[\]/\"diff_ids\": [\"sha256:$LAYER_DIGEST\"]/" "$IMAGE_DIR/config.json"
# Calculate config digest
CONFIG_DIGEST=$(sha256sum "$IMAGE_DIR/config.json" | cut -d' ' -f1)
CONFIG_SIZE=$(stat -c%s "$IMAGE_DIR/config.json")
cp "$IMAGE_DIR/config.json" "$IMAGE_DIR/blobs/sha256/$CONFIG_DIGEST"
echo "✅ Config digest: sha256:$CONFIG_DIGEST"
echo "✅ Config size: $CONFIG_SIZE bytes"
# Create OCI manifest
echo "11. Creating OCI manifest..."
cat > "$IMAGE_DIR/manifest.json" << EOF
{
"schemaVersion": 2,
"config": {
"mediaType": "application/vnd.oci.image.config.v1+json",
"digest": "sha256:$CONFIG_DIGEST",
"size": $CONFIG_SIZE
},
"layers": [
{
"mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
"digest": "sha256:$LAYER_DIGEST",
"size": $LAYER_SIZE
}
]
}
EOF
echo "✅ Created OCI manifest"
# Create OCI index
echo "12. Creating OCI index..."
MANIFEST_DIGEST=$(sha256sum "$IMAGE_DIR/manifest.json" | cut -d' ' -f1)
MANIFEST_SIZE=$(stat -c%s "$IMAGE_DIR/manifest.json")
cp "$IMAGE_DIR/manifest.json" "$IMAGE_DIR/blobs/sha256/$MANIFEST_DIGEST"
cat > "$IMAGE_DIR/index.json" << EOF
{
"schemaVersion": 2,
"manifests": [
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"digest": "sha256:$MANIFEST_DIGEST",
"size": $MANIFEST_SIZE,
"platform": {
"architecture": "amd64",
"os": "linux"
},
"annotations": {
"org.opencontainers.image.ref.name": "apt-ostree-demo:latest"
}
}
]
}
EOF
echo "✅ Created OCI index"
# Create final image directory
echo "13. Creating final image..."
FINAL_IMAGE="/tmp/apt-ostree-demo.oci"
rm -rf "$FINAL_IMAGE"
mv "$IMAGE_DIR" "$FINAL_IMAGE"
echo "✅ Created OCI image: $FINAL_IMAGE"
echo
# Validate the image
echo "14. Validating OCI image..."
if command -v skopeo &> /dev/null; then
echo "Validating with skopeo..."
skopeo validate "oci:$FINAL_IMAGE"
if [ $? -eq 0 ]; then
echo "✅ OCI image validation successful"
else
echo "⚠️ OCI image validation failed"
fi
echo "Inspecting image..."
skopeo inspect "oci:$FINAL_IMAGE"
else
echo "⚠️ skopeo not available for validation"
fi
echo
# Show image structure
echo "15. Image structure:"
echo "OCI Image: $FINAL_IMAGE"
ls -la "$FINAL_IMAGE"
echo
echo "Blobs:"
ls -la "$FINAL_IMAGE/blobs/sha256/"
echo
# Cleanup
echo "16. Cleanup..."
rm -rf "$BUILD_DIR"
echo "✅ Cleaned up build directory"
echo
echo "=== Build Complete ==="
echo "✅ OCI image created: $FINAL_IMAGE"
echo "✅ Image is OCI specification compliant"
echo "✅ Ready for use with container runtimes"
echo
echo "To use the image:"
echo " skopeo inspect oci:$FINAL_IMAGE"
echo " skopeo copy oci:$FINAL_IMAGE docker-daemon:apt-ostree-demo:latest"