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Cache module dependencies between container builds #8400

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Cache module dependencies between container builds
kaovilai Nov 12, 2024
6be30f8
Merge branch 'main' into cache-mod-deps
kaovilai Jan 23, 2025
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39 changes: 31 additions & 8 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -34,11 +34,16 @@ ENV CGO_ENABLED=0 \
GOARM=${TARGETVARIANT} \
LDFLAGS="-X ${PKG}/pkg/buildinfo.Version=${VERSION} -X ${PKG}/pkg/buildinfo.GitSHA=${GIT_SHA} -X ${PKG}/pkg/buildinfo.GitTreeState=${GIT_TREE_STATE} -X ${PKG}/pkg/buildinfo.ImageRegistry=${REGISTRY}"

RUN mkdir -p /output/usr/bin
WORKDIR /go/src/github.com/vmware-tanzu/velero

COPY go.mod go.sum /go/src/github.com/vmware-tanzu/velero/
# --mount=type=cache,target=/go/pkg/mod,id=vbb allows reuse of build cache across builds instead of invalidating whole cache when go.mod changes
# id is to allow other stages to use the same cache path without conflicting with this stage.
# velero-builder and restic-builder uses a different go.mod from each other. id helps to avoid sharing cache with velero-builder.
RUN --mount=type=cache,target=/go/pkg/mod,id=vbb go mod download
COPY . /go/src/github.com/vmware-tanzu/velero

RUN mkdir -p /output/usr/bin && \
RUN --mount=type=cache,target=/go/pkg/mod,id=vbb mkdir -p /output/usr/bin && \
export GOARM=$( echo "${GOARM}" | cut -c2-) && \
go build -o /output/${BIN} \
-ldflags "${LDFLAGS}" ${PKG}/cmd/${BIN} && \
Expand All @@ -65,12 +70,30 @@ ENV CGO_ENABLED=0 \
GOARCH=${TARGETARCH} \
GOARM=${TARGETVARIANT}

COPY . /go/src/github.com/vmware-tanzu/velero

RUN mkdir -p /output/usr/bin && \
export GOARM=$(echo "${GOARM}" | cut -c2-) && \
/go/src/github.com/vmware-tanzu/velero/hack/build-restic.sh && \
go clean -modcache -cache
# /output dir needed by last stage to copy even when BIN is not velero
RUN mkdir -p /output/usr/bin && mkdir -p /build/restic
WORKDIR /build/restic

# cache go mod download before applying patches
RUN --mount=type=cache,target=/go/pkg/mod,id=restic if [ "${BIN}" = "velero" ]; then \
git clone --single-branch -b v${RESTIC_VERSION} https://github.com/restic/restic.git . && \
go mod download; \
fi

# invalidate cache if patch changes
COPY hack/fix_restic_cve.txt /go/src/github.com/vmware-tanzu/velero/hack/

# cache go mod download after applying patches
RUN --mount=type=cache,target=/go/pkg/mod,id=restic if [ "${BIN}" = "velero" ]; then \
git apply /go/src/github.com/vmware-tanzu/velero/hack/fix_restic_cve.txt && \
go mod download; \
fi

# arch specific build layer
RUN --mount=type=cache,target=/go/pkg/mod,id=restic if [ "${BIN}" = "velero" ]; then \
GOARM=$(echo "${GOARM}" | cut -c2-) go run build.go --goos "${GOOS}" --goarch "${GOARCH}" --goarm "${GOARM}" -o /output/usr/bin/restic && \
chmod +x /output/usr/bin/restic; \
fi

# Velero image packing section
FROM paketobuildpacks/run-jammy-tiny:latest
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