Dockerfile

# Build the manager binary
FROM registry.cn-hangzhou.aliyuncs.com/aoxn/golang:1.22 as builder
ARG TARGETOS
ARG TARGETARCH
ARG GOPROXY

WORKDIR /workspace
# 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 GOPROXY="https://goproxy.cn,direct" \
	go mod download

# Copy the go source
COPY cmd/ cmd/
COPY api/ api/
COPY internal/ internal/
COPY version.go version.go
COPY build/bin/ build/bin/

# Build
# the GOARCH has not a default value to allow the binary be built according to the host where the command
# 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} \
	GOPROXY="https://goproxy.cn,direct" \
	go build -a -o manager cmd/manager/main.go

# Use distroless as minimal base image to package the manager binary
# Refer to https://github.com/GoogleContainerTools/distroless for more details
FROM registry.cn-hangzhou.aliyuncs.com/aoxn/alpine:3.8
WORKDIR /
COPY --from=builder /workspace/build/bin/etcdctl /usr/bin/
COPY --from=builder /workspace/build/bin/etcdm.sh /usr/bin/
COPY --from=builder /workspace/manager .
USER 65532:65532

ENTRYPOINT ["/manager"]