Dockerfile

# Build the contour-authserver binary.
#
# Note that this is not used for releasing, since goreleaser handles that.

FROM golang:1.20 as base

ENV GO111MODULE=on

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

FROM base as builder

# Copy the go source
COPY . .

# Build
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on make build

# 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/bin/contour-authserver .
USER nonroot:nonroot

ENTRYPOINT ["/contour-authserver"]