improve build

Signed-off-by: fastlorenzo <[email protected]>

.github/workflows/build.yaml

@@ -58,6 +58,11 @@ jobs:
         with:
           images: ghcr.io/${{ github.repository }}
 
+      - name: Inject go-build cache into docker
+        uses: reproducible-containers/[email protected]
+        with:
+          cache-source: ~/.cache/go-build
+
       - name: Build and push the container image
         uses: docker/build-push-action@v6
         with:

Dockerfile

@@ -4,12 +4,15 @@ ARG TARGETOS
 ARG TARGETARCH
 
 WORKDIR /workspace
+# Setup the go module cache
+RUN go env -w GOMODCACHE=/root/.cache/go-build
+
 # Copy the Go Modules manifests
 COPY go.mod go.mod
 COPY go.sum go.sum
 # cache deps before building and copying source so that we don't need to re-download as much
 # and so that source changes don't invalidate our downloaded layer
-RUN go mod download
+RUN --mount=type=cache,target=/root/.cache/go-build go mod download
 
 # Copy the go source
 COPY cmd/main.go cmd/main.go
@@ -21,7 +24,7 @@ COPY internal/controller/ internal/controller/
 # was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
 # the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
 # by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
-RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
+RUN --mount=type=cache,target=/root/.cache/go-build CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
 
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details