Merge pull request #1 from docker/action-definition

Add action definition

.github/workflows/main.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - '*'
+  pull_request:
+
+jobs:
+  build:
+    name: build
+    runs-on: ubuntu-latest
+    timeout-minutes: 3
+    steps:
+
+    - name: Checkout
+      uses: actions/checkout@v2
+    
+    - name: Run local registry
+      run: docker run -d -p 5000:5000 registry:2
+    
+    - name: Build and push image
+      uses: ./
+      env:
+        DOCKER_BUILDKIT: 1
+      with:
+        registry: localhost:5000
+        repository: temp/workflow
+        tags: foo
+      
+    - name: Remove local image
+      run: docker image rm localhost:5000/temp/workflow:foo
+
+    - name: Run image from registry
+      run: docker run localhost:5000/temp/workflow:foo

Dockerfile

@@ -0,0 +1,3 @@
+FROM alpine:3
+
+ENTRYPOINT ["echo", "docker github actions"]

LICENCE

@@ -0,0 +1,191 @@
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README.md

@@ -1,2 +1,190 @@
 # build-push-action
-Build+push official Docker GitHub action
+
+Builds and pushes Docker images and will log in to a Docker registry if required
+
+[Inputs](#Inputs)
+* [repository](#repository)
+* [username](#username)
+* [password](#password)
+* [registry](#registry)
+* [tags](#tags)
+* [tag_with_ref](#tag_with_ref)
+* [tag_with_sha](#tag_with_sha)
+* [path](#path)
+* [dockerfile](#dockerfile)
+* [target](#target)
+* [always_pull](#always_pull)
+* [build_args](#build_args)
+* [labels](#labels)
+* [add_git_labels](#add_git_labels)
+* [push](#push)
+
+[Example usage](#Example-usage)
+
+## Inputs
+
+### `repository`
+
+**Required** Docker repository to tag the image with.
+
+### `username`
+
+Username used to log in to a Docker registry. If not set then no login will occur.
+
+### `password`
+
+Password used to log in to a Docker registry. If not set then no login will occur.
+
+### `registry`
+
+Server address of Docker registry. If not set then will default to Docker Hub.
+
+### `tags`
+
+Comma-delimited list of tags. These will be added to the registry/repository to form the image's tags.
+
+Example:
+
+```yaml
+tags: tag1,tag2
+```
+
+### `tag_with_ref`
+
+Boolean value. Defaults to `false`.
+
+Automatically tags the built image with the git reference. The format of the tag depends on the type of git reference with all forward slashes replaced with `-`.
+
+For pushes to a branch the reference will be `refs/heads/{branch-name}` and the tag will be `{branch-name}`. If `{branch-name}` is master then the tag will be `latest`.
+
+For pull requests the reference will be `refs/pull/{pull-request}` and the tag will be `pr-{pull-request}`.
+
+For git tags the reference will be `refs/tags/{git-tag}` and the tag will be `{git-tag}`.
+
+Examples:
+
+|Git Reference|Image tag|
+|---|---|
+|`refs/heads/master`|`latest`|
+|`refs/heads/my/branch`|`my-branch`|
+|`refs/pull/2/merge`|`pr-2-merge`|
+|`refs/tags/v1.0.0`|`v1.0.0`|
+
+### `tag_with_sha`
+
+Boolean value. Defaults to `false`.
+
+Automatically tags the built image with the git short SHA prefixed with `sha-`.
+
+Example:
+
+|Git SHA|Image tag|
+|---|---|
+|`676cae2f85471aeff6776463c72881ebd902dcf9`|`sha-676cae2`|
+
+### `path`
+
+Path to run the docker build from. Defaults to `.`.
+
+### `dockerfile`
+
+Name of the Dockerfile. Defaults to `{path}/Dockerfile`.
+
+### `target`
+
+Sets the target stage to build.
+
+### `always_pull`
+
+Boolean value. Defaults to `false`.
+
+Always attempt to pull a newer version of the image.
+
+### `build_args`
+
+Comma-delmited list of build-time variables.
+
+Example:
+
+```yaml
+build_args: arg1=value1,arg2=value2
+```
+
+### `labels`
+
+Comma-delimited list of labels to add to the built image.
+
+Example:
+
+```yaml
+labels: label_name_1=label_value_1,label_name_2=label_value_2
+```
+
+### `add_git_labels`
+
+Boolean value. Defaults to `false`.
+
+Adds labels with git repository information to the built image.
+
+The labels are:
+
+|Label key|Example value|Description|
+|---|---|---|
+|`com.docker.github-actions-actor`|`my-username`|The actor that kicked off the workflow. For example this could be the username of the user that did the git push.|
+|`com.docker.github-actions-sha`|`676cae2f85471aeff6776463c72881ebd902dcf9`|Full git SHA of the current commit.|
+
+
+### `push`
+
+Boolean value. Defaults to `true`.
+
+Whether to push the built image.
+
+## Example usage
+
+The following will build the root Dockerfile, tag the image as `myorg/myrepository:latest`, log in to Docker Hub using GitHub secrets, and push the image to the Docker Hub repository `myorg/myrepository`:
+
+```yaml
+uses: docker/build-push-action@v1
+with:
+  username: ${{ secrets.DOCKER_USERNAME }}
+  password: ${{ secrets.DOCKER_PASSWORD }}
+  repository: myorg/myrepository
+  tags: latest
+```
+
+The following will build the root Dockerfile, tag the image with the git reference and SHA as described above, log in to Docker Hub using GitHub secrets, and push the image to the Docker Hub repository `myorg/myrepository`:
+
+```yaml
+uses: docker/build-push-action@v1
+with:
+  username: ${{ secrets.DOCKER_USERNAME }}
+  password: ${{ secrets.DOCKER_PASSWORD }}
+  repository: myorg/myrepository
+  tag_with_ref: true
+  tag_with_sha: true
+```
+
+The following will only push the image when the event that kicked off the workflow was a push of a git tag:
+
+```yaml
+uses: docker/build-push-action@v1
+with:
+  username: ${{ secrets.DOCKER_USERNAME }}
+  password: ${{ secrets.DOCKER_PASSWORD }}
+  repository: myorg/myrepository
+  tag_with_ref: true
+  push: ${{ startsWith(github.ref, 'refs/tags/') }}
+```
+
+The following builds the `mytarget` stage and pushes that:
+ 
+```yaml
+uses: docker/build-push-action@v1
+with:
+  username: ${{ secrets.DOCKER_USERNAME }}
+  password: ${{ secrets.DOCKER_PASSWORD }}
+  repository: myorg/myrepository
+  tag_with_ref: true
+  target: mytarget
+```

action.yml

@@ -0,0 +1,60 @@
+name: Build and push Docker images
+description: Builds and pushes Docker images and will log in to a Docker registry if required
+author: Docker
+runs:
+  using: docker
+  image: docker://docker/github-actions:v0.0.1
+  args:
+    - build-push
+inputs:
+  username:
+    description: Username used to log in to a Docker registry. If not set then no login will occur
+    required: false
+  password:
+    description: Password used to log in to a Docker registry. If not set then no login will occur
+    required: false
+  registry:
+    description: Server address of Docker registry. If not set then will default to Docker Hub
+    required: false
+  repository:
+    description: Docker repository to tag the image with
+    required: true
+  tags:
+    description: Comma-delimited list of tags. These will be added to the registry/repository to form the image's tags
+    required: false
+  tag_with_ref:
+    description: Automatically tags the built image with the git reference as per the readme
+    required: false
+    default: false
+  tag_with_sha:
+    description: Automatically tags the built image with the git short sha as per the readme
+    required: false
+    default: false
+  path:
+    description: Path to run docker build from
+    required: false
+    default: "."
+  dockerfile:
+    description: Name of the Dockerfile (Default is 'path/Dockerfile')
+    required: false
+  target:
+    description: Sets the target stage to build
+    required: false
+  always_pull:
+    description: Always attempt to pull a newer version of the image
+    required: false
+    default: false
+  build_args:
+    description: Comma-delmited list of build-time variables
+    required: false
+  labels:
+    description: Comma-delimited list of labels to add to the built image
+    required: false
+  add_git_labels:
+    description: Adds labels with git repo info to the built image
+    required: false
+    default: false
+  push:
+    description: Whether to push the image
+    required: false
+    default: true