# Build the manager binary
FROM golang:1.23 as builder
ARG TARGETOS
ARG TARGETARCH
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 go mod download
# Copy the go source
COPY cmd/main.go cmd/main.go
COPY internal/controller/ internal/controller/
# 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 -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
FROM alpine:3
WORKDIR /
COPY --from=builder /workspace/manager .
USER 65532:65532
ENTRYPOINT ["/manager"]
after:
# build stage
FROM quay.io/zncdatadev/go-devel:1.23.2-kubedoop0.0.0-dev AS builder
ARG TARGETOS
ARG TARGETARCH
WORKDIR /workspace
COPY go.mod go.mod
COPY go.sum go.sum
RUN go mod download
COPY cmd/main.go cmd/main.go
COPY internal/controller/ internal/controller/
RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
# final stage
FROM registry.access.redhat.com/ubi9/ubi-minimal:latest
WORKDIR /
COPY --from=builder /workspace/manager .
USER 65532:65532
ENTRYPOINT ["/manager"]
Current operator build with
golang:1.23and final stage withalpine:3in container environment.We decide to use UBI(Red Hat Universal Base Image) image as the underlying image for all products.
trace:
Description
before:
after: