Dockerfile

# Build the manager binary
FROM golang:1.25-alpine AS builder

# Install ca-certificates and git
RUN apk add --no-cache ca-certificates git

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/ cmd/
COPY controllers/ controllers/
COPY pkg/ pkg/

# Build
ARG TARGETOS
ARG TARGETARCH
RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} 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 gcr.io/distroless/static:nonroot
WORKDIR /
COPY --from=builder /workspace/manager .
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

USER 65532:65532

ENTRYPOINT ["/manager"]