djpbessems/ContainerImage.Pinniped
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Merge pull request #335 from mattmoyer/optimize-dockerfile

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Optimize image build using .dockerignore and BuildKit features.
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Matt Moyer 2021-01-27 11:35:42 -06:00 committed by GitHub
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2 changed files with 40 additions and 22 deletions
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.dockerignore Normal file
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./.*
./*.md
./*.yaml
./apis
./deploy
./Dockerfile
./generated/1.1*
./hack/lib/tilt/
./internal/mocks
./LICENSE
./site/
./test
**/*_test.go

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Dockerfile
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# syntax = docker/dockerfile:1.0-experimental
# Copyright 2020-2021 the Pinniped contributors. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
FROM golang:1.15.7 as build-env
WORKDIR /work
# Get dependencies first so they can be cached as a layer
COPY go.* ./
COPY generated/1.20/apis/go.* ./generated/1.20/apis/
COPY generated/1.20/client/go.* ./generated/1.20/client/
RUN go mod download
# Copy only the production source code to avoid cache misses when editing other files
COPY generated ./generated
COPY cmd ./cmd
COPY pkg ./pkg
COPY internal ./internal
COPY hack ./hack
COPY . .
ARG GOPROXY
# Build the executable binary (CGO_ENABLED=0 means static linking)
RUN mkdir out \
&& CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "$(hack/get-ldflags.sh)" -o out ./cmd/pinniped-concierge/... \
&& CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "$(hack/get-ldflags.sh)" -o out ./cmd/pinniped-supervisor/... \
&& CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o out ./cmd/local-user-authenticator/...
# Pass in GOCACHE (build cache) and GOMODCACHE (module cache) so they
# can be re-used between image builds.
RUN \
--mount=type=cache,target=/cache/gocache \
--mount=type=cache,target=/cache/gomodcache \
mkdir out && \
GOCACHE=/cache/gocache \
GOMODCACHE=/cache/gomodcache \
CGO_ENABLED=0 \
GOOS=linux \
GOARCH=amd64 \
go build -v -ldflags "$(hack/get-ldflags.sh)" -o out \
./cmd/pinniped-concierge/... \
./cmd/pinniped-supervisor/... \
./cmd/local-user-authenticator/...
# Use a runtime image based on Debian slim
# Use a Debian slim image to grab a reasonable default CA bundle.
FROM debian:10.7-slim AS get-ca-bundle-env
RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates && rm -rf /var/lib/apt/lists/* /var/cache/debconf/*
# Use a runtime image based on Debian slim.
FROM debian:10.7-slim
RUN apt-get update && apt-get install -y ca-certificates && rm -rf /var/lib/apt/lists/*
COPY --from=get-ca-bundle-env /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
# Copy the binaries from the build-env stage
COPY --from=build-env /work/out/pinniped-concierge /usr/local/bin/pinniped-concierge
COPY --from=build-env /work/out/pinniped-supervisor /usr/local/bin/pinniped-supervisor
COPY --from=build-env /work/out/local-user-authenticator /usr/local/bin/local-user-authenticator
# Copy the binaries from the build-env stage.
COPY --from=build-env /work/out/ /usr/local/bin/
# Document the ports
EXPOSE 8080 8443