Add Restic builder in Dockerfile.

Signed-off-by: Xun Jiang <blackpiglet@gmail.com>

Dockerfile

@@ -11,48 +11,59 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM --platform=$BUILDPLATFORM golang:1.18 as builder-env
+
+# Setup build environment
+ARG GOLANG_VERSION=1.18.8
+FROM --platform=$BUILDPLATFORM golang:${GOLANG_VERSION} as builder-env
 
 ARG GOPROXY
+ARG BIN
 ARG PKG
 ARG VERSION
+ARG REGISTRY
 ARG GIT_SHA
 ARG GIT_TREE_STATE
-ARG REGISTRY
+ARG RESTIC_VERSION
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETVARIANT
 
 ENV CGO_ENABLED=0 \
     GO111MODULE=on \
     GOPROXY=${GOPROXY} \
+    GOOS=${TARGETOS} \
+    GOARCH=${TARGETARCH} \
+    GOARM=${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}"
 
 WORKDIR /go/src/github.com/vmware-tanzu/velero
 
 COPY . /go/src/github.com/vmware-tanzu/velero
 
+# Velero binary build section
+ARG GOLANG_VERSION=1.18.8
 FROM --platform=$BUILDPLATFORM builder-env as builder
 
-ARG TARGETOS
-ARG TARGETARCH
-ARG TARGETVARIANT
-ARG PKG
-ARG BIN
-ARG RESTIC_VERSION
-
-ENV GOOS=${TARGETOS} \
-    GOARCH=${TARGETARCH} \
-    GOARM=${TARGETVARIANT}
-
 RUN mkdir -p /output/usr/bin && \
     export GOARM=$( echo "${GOARM}" | cut -c2-) && \
-    bash ./hack/build-restic.sh && \
     go build -o /output/${BIN} \
     -ldflags "${LDFLAGS}" ${PKG}/cmd/${BIN}
 
-FROM gcr.io/distroless/base-debian11:nonroot
+# Restic binary build section
+ARG GOLANG_VERSION=1.19.4-bullseye
+FROM --platform=$BUILDPLATFORM builder-env as restic-builder
+
+RUN mkdir -p /output/usr/bin && \
+    bash /go/src/github.com/vmware-tanzu/velero/hack/build-restic.sh
+
+# Velero image packing section
+FROM gcr.io/distroless/base-debian11@sha256:99133cb0878bb1f84d1753957c6fd4b84f006f2798535de22ebf7ba170bbf434
 
 LABEL maintainer="Nolan Brubaker <brubakern@vmware.com>"
 
 COPY --from=builder /output /
 
+COPY --from=restic-builder /output /
+
 USER nonroot:nonroot
 

changelogs/unreleased/5685-blackpiglet

@@ -0,0 +1 @@
+Add Restic builder in Dockerfile, and keep the used built Golang image version in accordance with upstream Restic.

hack/build-restic.sh

@@ -50,6 +50,7 @@ fi
 mkdir ${build_path}/restic
 git clone -b v${RESTIC_VERSION} https://github.com/restic/restic.git ${build_path}/restic
 pushd ${build_path}/restic
+git apply /go/src/github.com/vmware-tanzu/velero/hack/modify_acces_denied_code.txt
 go run build.go --goos "${GOOS}" --goarch "${GOARCH}" --goarm "${GOARM}" -o ${restic_bin}
 chmod +x ${restic_bin}
 popd

hack/modify_acces_denied_code.txt

@@ -0,0 +1,13 @@
+diff --git a/internal/backend/s3/s3.go b/internal/backend/s3/s3.go
+index 0b3816c06..eec10f9c7 100644
+--- a/internal/backend/s3/s3.go
++++ b/internal/backend/s3/s3.go
+@@ -164,7 +164,7 @@ func isAccessDenied(err error) bool {
+ 	debug.Log("isAccessDenied(%T, %#v)", err, err)
+ 
+ 	var e minio.ErrorResponse
+-	return errors.As(err, &e) && e.Code == "Access Denied"
++	return errors.As(err, &e) && e.Code == "AccessDenied"
+ }
+ 
+ // IsNotExist returns true if the error is caused by a not existing file.