Dockerfile

# Build the manager binary
FROM golang:1.21 as builder
ARG TARGETOS
ARG TARGETARCH

WORKDIR /workspace
# Copy the go source
COPY . .

# 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} go build -v -a -o /bin/frp-provisioner-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 ubuntu:focal
WORKDIR /
COPY --from=builder /bin/frp-provisioner-manager /bin/frp-provisioner-manager
USER 65532:65532
ENTRYPOINT ["/bin/frp-provisioner-manager"]