34 lines
1.3 KiB
Docker
34 lines
1.3 KiB
Docker
# Build the manager binary
|
|
# Override BASE_IMAGE to build from another registry, e.g. docker.io/library/golang:1.27.1
|
|
ARG BASE_IMAGE=golang:1.27.1
|
|
FROM ${BASE_IMAGE} AS builder
|
|
ARG TARGETOS
|
|
ARG TARGETARCH
|
|
|
|
WORKDIR /workspace
|
|
# Copy the Go Modules manifests
|
|
COPY go.mod go.mod
|
|
COPY go.sum go.sum
|
|
# cache deps before building and copying source so that we don't need to re-download as much
|
|
# and so that source changes don't invalidate our downloaded layer
|
|
RUN go mod download
|
|
|
|
# Copy the Go source (relies on .dockerignore to filter)
|
|
COPY . .
|
|
|
|
# Build
|
|
# the GOARCH has no default value to allow the binary to be built according to the host where the command
|
|
# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
|
|
# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
|
|
# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
|
|
RUN CGO_ENABLED=0 GOOS=${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 gcr.io/distroless/static:nonroot
|
|
WORKDIR /
|
|
COPY --from=builder /workspace/manager .
|
|
USER 65532:65532
|
|
|
|
ENTRYPOINT ["/manager"]
|