Dockerfile

FROM --platform=$BUILDPLATFORM golang:1.27.1-alpine3.23@sha256:d9e2f2f07b10cc922da3e80e035c3058810b328d5aef82d2c63680967c5e2ec9 AS builder

RUN apk add --update --no-cache ca-certificates make git curl

ARG TARGETOS
ARG TARGETARCH
ARG GO_BUILD_FLAGS

WORKDIR /usr/local/src/telemetry-controller

# 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 api/ api/
COPY controllers/ controllers/
COPY pkg/ pkg/

# Build
RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build $GO_BUILD_FLAGS -o /usr/local/bin/manager cmd/main.go

FROM gcr.io/distroless/static:nonroot@sha256:e2e927ec666bae08560abb3c55d0659eceabb657f56b6782ab500a9fc7f555e3

COPY --from=builder /usr/local/bin/manager /manager
USER 65532:65532

ENTRYPOINT ["/manager"]