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Docker+CI: More efficient build #939

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Docker+CI: More efficient build #939

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3c0a2be
Docker+CI: More efficient build
julienduchesne Oct 27, 2023
c9ca900
Set paths filter for docs
julienduchesne Oct 27, 2023
624cc3b
Merge branch 'main' into julienduchesne/efficient-build
julienduchesne Nov 1, 2023
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21 changes: 17 additions & 4 deletions .github/workflows/docker.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -29,9 +29,11 @@ jobs:
strategy:
fail-fast: false
matrix:
platform:
- linux/amd64
- linux/arm64
os:
- linux
arch:
- amd64
- arm64

steps:
- name: Checkout
Expand All @@ -43,6 +45,17 @@ jobs:
images: ${{ env.REGISTRY_IMAGE }}
tags: ${{ env.TAGS_CONFIG }}

# Build executable
- name: Setup Go
uses: actions/setup-go@v2
with:
go-version: '1.20'
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Suggested change
- name: Setup Go
uses: actions/setup-go@v2
with:
go-version: '1.20'
- name: Setup Go
uses: actions/setup-go@v4
with:
go-version: '1.21'

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The downside of this approach is that there is now a place for specifying the Go version that is not updated by dependabot. Should we perhaps update the Makefile to read the Go version from the Dockerfile or something like that?

- name: Build
run: make static
env:
GOOS: ${{ matrix.os }}
GOARCH: ${{ matrix.arch }}

# Setup buildx
- name: Set up QEMU
uses: docker/setup-qemu-action@v3
Expand Down Expand Up @@ -71,7 +84,7 @@ jobs:
uses: docker/build-push-action@v5
with:
context: .
platforms: ${{ matrix.platform }}
platforms: ${{ matrix.os }}/${{ matrix.arch }}
labels: ${{ steps.meta.outputs.labels }}
outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=${{ github.event_name != 'pull_request' }}

Expand Down
4 changes: 4 additions & 0 deletions .github/workflows/publish-page.yml
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Expand Up @@ -5,12 +5,16 @@ on:
push:
branches:
- main
paths:
- docs/**
pull_request:
types:
- opened
- reopened
- synchronize
- closed
paths:
- docs/**

permissions:
contents: write
Expand Down
24 changes: 8 additions & 16 deletions Dockerfile
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@@ -1,21 +1,17 @@
# download kubectl
FROM golang:1.21.3-alpine as kubectl
RUN apk add --no-cache curl
FROM golang:1.21.3 as kubectl
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Since none of these stages are building code any more, you could drop the golang images altogether

RUN export VERSION=$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt) &&\
export OS=$(go env GOOS) && \
export ARCH=$(go env GOARCH) &&\
curl -o /usr/local/bin/kubectl -L https://storage.googleapis.com/kubernetes-release/release/${VERSION}/bin/${OS}/${ARCH}/kubectl &&\
chmod +x /usr/local/bin/kubectl

# build jsonnet-bundler
FROM golang:1.21.3-alpine as jb
WORKDIR /tmp
RUN apk add --no-cache git make bash &&\
git clone https://github.com/jsonnet-bundler/jsonnet-bundler &&\
ls /bin &&\
cd jsonnet-bundler &&\
make static &&\
mv _output/jb /usr/local/bin/jb
FROM golang:1.21.3 as jb
RUN export OS=$(go env GOOS) &&\
export ARCH=$(go env GOARCH) &&\
curl -o /usr/local/bin/jb -L "https://github.com/jsonnet-bundler/jsonnet-bundler/releases/download/v0.5.1/jb-${OS}-${ARCH}" &&\
chmod +x /usr/local/bin/jb

FROM golang:1.21.3-alpine as helm
WORKDIR /tmp/helm
Expand All @@ -39,15 +35,11 @@ RUN export TAG=$(curl --silent "https://api.github.com/repos/kubernetes-sigs/kus
curl -SL "https://github.com/kubernetes-sigs/kustomize/releases/download/${TAG}/kustomize_${VERSION_TAG}_${OS}_${ARCH}.tar.gz" > kustomize.tgz && \
tar -xvf kustomize.tgz

FROM golang:1.21.3 as build
WORKDIR /app
COPY . .
RUN make static
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Be nicer if this could be kept, so a docker build continues to work as expected and isn't a two-step thing where if you forget to run make static you can get an outdated binary in the image.

It should be possible to do this with make, since it can avoid rebuilding the target if the inputs haven't changed. Would require a change in Makefile to list the dependencies (*.go, go.mod and go.sum) but shouldn't be too bad to do.


# assemble final container
FROM alpine:3.18
RUN apk add --no-cache coreutils diffutils less git openssh-client
COPY --from=build /app/tk /usr/local/bin/tk
# Need to `make static` before building the container
COPY tk /usr/local/bin/tk
COPY --from=kubectl /usr/local/bin/kubectl /usr/local/bin/kubectl
COPY --from=jb /usr/local/bin/jb /usr/local/bin/jb
COPY --from=helm /tmp/helm/helm /usr/local/bin/helm
Expand Down
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