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Update example with explanations

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Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
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CrazyMax 2020-09-12 20:40:12 +02:00
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70
.github/workflows/ci.yml vendored
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@ -233,73 +233,3 @@ jobs:
name: Dump context
if: always()
uses: crazy-max/ghaction-dump-context@v1
tags-labels:
runs-on: ubuntu-latest
services:
registry:
image: registry:2
ports:
- 5000:5000
steps:
-
name: Checkout
uses: actions/checkout@v2.3.2
-
name: Prepare
id: prep
run: |
DOCKER_IMAGE=localhost:5000/name/app
VERSION=noop
if [[ $GITHUB_REF == refs/tags/* ]]; then
VERSION=${GITHUB_REF#refs/tags/}
elif [[ $GITHUB_REF == refs/heads/* ]]; then
VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
VERSION=edge
fi
elif [[ $GITHUB_REF == refs/pull/* ]]; then
VERSION=pr-${{ github.event.number }}
fi
TAGS="${DOCKER_IMAGE}:${VERSION}"
if [ "${{ github.event_name }}" != "pull_request" ]; then
TAGS="${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
fi
if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
MINOR=${VERSION%.*}
MAJOR=${MINOR%.*}
TAGS="$TAGS,${DOCKER_IMAGE}:${MINOR},${DOCKER_IMAGE}:${MAJOR},${DOCKER_IMAGE}:latest"
fi
echo ::set-output name=version::${VERSION}
echo ::set-output name=tags::${TAGS}
echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
-
name: Set up QEMU
uses: docker/setup-qemu-action@v1
-
name: Set up Docker Buildx
uses: docker/setup-buildx-action@v1
with:
driver-opts: network=host
-
name: Build and push
uses: ./
with:
context: ./test
file: ./test/Dockerfile
push: true
tags: ${{ steps.prep.outputs.tags }}
labels: |
org.opencontainers.image.created=${{ steps.prep.outputs.created }}
org.opencontainers.image.source=${{ github.repositoryUrl }}
org.opencontainers.image.version=${{ steps.prep.outputs.version }}
org.opencontainers.image.revision=${{ github.sha }}
org.opencontainers.image.licenses=${{ github.event.repository.license.name }}
-
name: Inspect
run: |
docker buildx imagetools inspect localhost:5000/name/app:${{ steps.prep.outputs.version }}
-
name: Dump context
if: always()
uses: crazy-max/ghaction-dump-context@v1

100
.github/workflows/example.yml vendored Normal file
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@ -0,0 +1,100 @@
name: example
on:
schedule:
- cron: '0 10 * * 0' # everyday sunday at 10am
push:
branches:
- '**'
tags:
- 'v*.*.*'
pull_request:
jobs:
docker:
runs-on: ubuntu-latest
services:
registry:
image: registry:2
ports:
- 5000:5000
steps:
-
name: Checkout
uses: actions/checkout@v2.3.2
-
name: Prepare
id: prep
run: |
DOCKER_IMAGE=localhost:5000/name/app
VERSION=noop
if [ "${{ github.event_name }}" = "schedule" ]; then
VERSION=nightly
elif [[ $GITHUB_REF == refs/tags/* ]]; then
VERSION=${GITHUB_REF#refs/tags/}
elif [[ $GITHUB_REF == refs/heads/* ]]; then
VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
VERSION=edge
fi
elif [[ $GITHUB_REF == refs/pull/* ]]; then
VERSION=pr-${{ github.event.number }}
fi
if [[ $GITHUB_REF != refs/tags/* ]] && [[ "${{ github.event_name }}" = "push" ]]; then
TAGS="${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
fi
TAGS="${DOCKER_IMAGE}:${VERSION}"
if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
MINOR=${VERSION%.*}
MAJOR=${MINOR%.*}
TAGS="$TAGS,${DOCKER_IMAGE}:${MINOR},${DOCKER_IMAGE}:${MAJOR},${DOCKER_IMAGE}:latest"
fi
echo ::set-output name=version::${VERSION}
echo ::set-output name=tags::${TAGS}
echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
-
name: Set up Docker Buildx
uses: docker/setup-buildx-action@v1
with:
driver-opts: network=host
-
name: Build and export to Docker client
uses: ./
with:
context: ./test
file: ./test/Dockerfile
outputs: type=docker
tags: ${{ steps.prep.outputs.tags }}
labels: |
org.opencontainers.image.created=${{ steps.prep.outputs.created }}
org.opencontainers.image.source=${{ github.repositoryUrl }}
org.opencontainers.image.version=${{ steps.prep.outputs.version }}
org.opencontainers.image.revision=${{ github.sha }}
org.opencontainers.image.licenses=${{ github.event.repository.license.name }}
-
name: Build and push to local registry
uses: ./
with:
context: ./test
file: ./test/Dockerfile
push: ${{ github.event_name != 'pull_request' }}
tags: ${{ steps.prep.outputs.tags }}
labels: |
org.opencontainers.image.created=${{ steps.prep.outputs.created }}
org.opencontainers.image.source=${{ github.repositoryUrl }}
org.opencontainers.image.version=${{ steps.prep.outputs.version }}
org.opencontainers.image.revision=${{ github.sha }}
org.opencontainers.image.licenses=${{ github.event.repository.license.name }}
-
name: Inspect image
run: |
docker image inspect localhost:5000/name/app:${{ steps.prep.outputs.version }}
-
name: Check manifest
if: github.event_name != 'pull_request'
run: |
docker buildx imagetools inspect localhost:5000/name/app:${{ steps.prep.outputs.version }}
-
name: Dump context
if: always()
uses: crazy-max/ghaction-dump-context@v1

120
README.md
View file

@ -22,9 +22,9 @@ ___
* [Path context](#path-context)
* [Isolated builders](#isolated-builders)
* [Multi-platform image](#multi-platform-image)
* [Advanced usage](#advanced-usage)
* [Local registry](#local-registry)
* [Leverage GitHub cache](#leverage-github-cache)
* [Tags and labels handling](#tags-and-labels-handling)
* [Complete workflow](#complete-workflow)
* [Update DockerHub repo description](#update-dockerhub-repo-description)
* [Customizing](#customizing)
@ -42,7 +42,10 @@ build-secrets, remote cache, etc. and different builder deployment/namespacing o
### Git context
The default behavior of this action is to use the Git context invoked by your workflow (`https://github.com/owner/repo#ref`).
The default behavior of this action is to use the [Git context invoked by your workflow](https://github.com/docker/build-push-action/blob/master/src/context.ts#L35).
> :warning: Subdir for this context is [not yet supported](https://github.com/docker/build-push-action/issues/120).
> For the moment you can use the [path context](#path-context).
```yaml
name: ci
@ -215,6 +218,8 @@ jobs:
user/app:1.0.0
```
## Advanced usage
### Local registry
For testing purposes you may need to create a [local registry](https://hub.docker.com/_/registry) to push images into.
@ -298,40 +303,37 @@ jobs:
cache-to: type=local,dest=/tmp/.buildx-cache
```
### Tags and labels handling
### Complete workflow
If you come from [`v1`](https://github.com/docker/build-push-action/tree/releases/v1#readme) and you want an
"automatic" tag management through Git reference and [OCI Image Format Specification](https://github.com/opencontainers/image-spec/blob/master/annotations.md)
for labels, you will have to do it in a dedicated step [for now](https://github.com/docker/build-push-action/issues/116).
The workflow below with the `Prepare` step will generate a
[`tags` output](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjobs_idoutputs):
The following workflow with the `Prepare` step will generate some [outputs](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjobs_idoutputs)
to handle tags and labels based on GitHub actions events. This is just an example to show many cases that you
might want to use:
* On `pull_request` event with `refs/pull/2/merge` ref and `a123b57` sha:
* `user/app:pr-2`
* On `push` event with `refs/heads/<default_branch>` ref and `676cae2` sha:
* `user/app:sha-676cae2`
* `user/app:edge`
* On `push` event with `refs/heads/dev` ref and `cf20257` sha:
* `user/app:sha-cf20257`
* `user/app:dev`
* On `push tags` event with `refs/tags/v1.2.3` ref and `9258794` sha:
* `user/app:sha-9258794`
* `user/app:v1.2.3`
* `user/app:v1.2`
* `user/app:v1`
* `user/app:latest`
| Event | Ref | Commit SHA | Docker Tag | Pushed |
|-----------------|-------------------------------|------------|------------------------------------|--------|
| `schedule` | | | `nightly` | Yes |
| `pull_request` | `refs/pull/2/merge` | `a123b57` | `pr-2` | No |
| `push` | `refs/heads/<default_branch>` | `676cae2` | `sha-676cae2`, `edge` | Yes |
| `push` | `/refs/heads/dev` | `cf20257` | `sha-676cae2`, `dev` | Yes |
| `push` | `/refs/heads/my/branch` | `a5df687` | `sha-a5df687`, `my-branch` | Yes |
| `push tag` | `/refs/tags/v1.2.3` | | `v1.2.3`, `v1.2`, `v1`, `latest` | Yes |
```yaml
name: ci
on:
schedule:
- cron: '0 10 * * *' # everyday at 10am
push:
branches: master
branches:
- '**'
tags:
- 'v*.*.*'
pull_request:
branches: master
jobs:
docker:
@ -346,7 +348,9 @@ jobs:
run: |
DOCKER_IMAGE=name/app
VERSION=noop
if [[ $GITHUB_REF == refs/tags/* ]]; then
if [ "${{ github.event_name }}" = "schedule" ]; then
VERSION=nightly
elif [[ $GITHUB_REF == refs/tags/* ]]; then
VERSION=${GITHUB_REF#refs/tags/}
elif [[ $GITHUB_REF == refs/heads/* ]]; then
VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
@ -356,7 +360,7 @@ jobs:
elif [[ $GITHUB_REF == refs/pull/* ]]; then
VERSION=pr-${{ github.event.number }}
fi
if [ "${{ github.event_name }}" != "pull_request" ]; then
if [[ $GITHUB_REF != refs/tags/* ]] && [[ "${{ github.event_name }}" = "push" ]]; then
TAGS="${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
fi
TAGS="${DOCKER_IMAGE}:${VERSION}"
@ -368,69 +372,6 @@ jobs:
echo ::set-output name=version::${VERSION}
echo ::set-output name=tags::${TAGS}
echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
-
name: Set up Docker Buildx
uses: docker/setup-buildx-action@v1
-
name: Build and push
id: docker_build
uses: docker/build-push-action@v2
with:
context: .
file: ./Dockerfile
tags: ${{ steps.prep.outputs.tags }}
labels: |
org.opencontainers.image.created=${{ steps.prep.outputs.created }}
org.opencontainers.image.source=${{ github.repositoryUrl }}
org.opencontainers.image.version=${{ steps.prep.outputs.version }}
org.opencontainers.image.revision=${{ github.sha }}
org.opencontainers.image.licenses=${{ github.event.repository.license.name }}
```
### Complete workflow
* On `pull_request` event, Docker image `name/app:edge` is **built**.
* On `push` event, Docker image `name/app:edge` is **built** and **pushed** to DockerHub.
* On `schedule` event, Docker image `name/app:nightly` is **built** and **pushed** to DockerHub.
* On `push tags` event, Docker image `name/app:<version>` and `name/app:latest` is **built** and **pushed** to DockerHub.
```yaml
name: ci
on:
schedule:
- cron: '0 10 * * *' # everyday at 10am
push:
branches: master
tags:
- 'v*.*.*'
pull_request:
branches: master
jobs:
docker:
runs-on: ubuntu-latest
steps:
-
name: Checkout
uses: actions/checkout@v2
-
name: Prepare
id: prep
run: |
DOCKER_IMAGE=name/app
VERSION=edge
if [[ $GITHUB_REF == refs/tags/* ]]; then
VERSION=${GITHUB_REF#refs/tags/}
fi
if [ "${{ github.event_name }}" = "schedule" ]; then
VERSION=nightly
fi
TAGS="${DOCKER_IMAGE}:${VERSION}"
if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
TAGS="$TAGS,${DOCKER_IMAGE}:latest"
fi
echo ::set-output name=tags::${TAGS}
-
name: Set up QEMU
uses: docker/setup-qemu-action@v1
@ -446,6 +387,7 @@ jobs:
password: ${{ secrets.DOCKERHUB_TOKEN }}
-
name: Build and push
id: docker_build
uses: docker/build-push-action@v2
with:
context: .
@ -453,6 +395,12 @@ jobs:
platforms: linux/amd64,linux/arm64,linux/386
push: ${{ github.event_name != 'pull_request' }}
tags: ${{ steps.prep.outputs.tags }}
labels: |
org.opencontainers.image.created=${{ steps.prep.outputs.created }}
org.opencontainers.image.source=${{ github.repositoryUrl }}
org.opencontainers.image.version=${{ steps.prep.outputs.version }}
org.opencontainers.image.revision=${{ github.sha }}
org.opencontainers.image.licenses=${{ github.event.repository.license.name }}
```
### Update DockerHub repo description