diff --git a/.github/workflows/buildx_and_publish.yml b/.github/workflows/buildx_and_publish.yml
new file mode 100644
index 0000000..79f17fd
--- /dev/null
+++ b/.github/workflows/buildx_and_publish.yml
@@ -0,0 +1,77 @@
+name: Docker multiarch publish
+
+on: push
+
+env:
+ REPOSITORY: moodle-php-apache
+ DOCKERHUB_OWNER: moodlehq
+ GH_OWNER: moodlehq
+
+jobs:
+ Build:
+ # Completely avoid forks to try this workflow.
+ if: github.repository_owner == 'moodlehq'
+ runs-on: ubuntu-latest
+ steps:
+ - name: Checkout
+ uses: actions/checkout@v2
+
+ # Calculate the tags to be pussed to the registries.
+ - name: Calculate image tag names
+ id: calculatetags
+ uses: docker/metadata-action@v3
+ with:
+ images: |
+ ${{ env.DOCKERHUB_OWNER }}/${{ env.REPOSITORY }}
+ ghcr.io/${{ env.GH_OWNER }}/${{ env.REPOSITORY }}
+ flavor: |
+ latest=false
+ tags: |
+ type=raw,value=dev
+
+ # https://github.com/docker/setup-qemu-action#usage
+ - name: Set up QEMU
+ uses: docker/setup-qemu-action@v1
+
+ # https://github.com/marketplace/actions/docker-setup-buildx
+ - name: Set up Docker Buildx
+ uses: docker/setup-buildx-action@v1
+
+ # https://github.com/docker/login-action#docker-hub
+ - name: Login to Docker Hub
+ uses: docker/login-action@v1
+ with:
+ username: ${{ secrets.DOCKERHUB_USERNAME }}
+ password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+ # https://github.com/docker/login-action#github-container-registry
+ - name: Login to GitHub Container Registry
+ uses: docker/login-action@v1
+ with:
+ registry: ghcr.io
+ username: ${{ secrets.GH_USERNAME }}
+ password: ${{ secrets.GITHUB_TOKEN }}
+
+ # https://github.com/docker/build-push-action#multi-platform-image
+ - name: Build and push to Docker Hub and Github registries
+ uses: docker/build-push-action@v2
+ with:
+ context: .
+ file: Dockerfile
+ platforms: linux/amd64,linux/arm64
+ push: true
+ tags: ${{ steps.calculatetags.outputs.tags }}
+
+ # https://github.com/peter-evans/dockerhub-description
+ # It's horrible that we need to use password here instead of PAT, because
+ # that's only available via CLI what defeats 2FA. Anyway, we need to
+ # auto-update de description, so using it (till available via PAT).
+ # Link: https://github.com/peter-evans/dockerhub-description/issues/10
+ # Note that we only update the description with the master branch version.
+ - name: Set Docker Hub description from README.md
+ if: github.ref == 'refs/heads/master'
+ uses: peter-evans/dockerhub-description@v2
+ with:
+ username: ${{ secrets.DOCKERHUB_USERNAME }}
+ password: ${{ secrets.DOCKERHUB_PASSWORD }}
+ repository: ${{ env.DOCKERHUB_OWNER }}/${{ env.REPOSITORY }}
diff --git a/README.md b/README.md
index 2ddf826..d9477c4 100644
--- a/README.md
+++ b/README.md
@@ -20,29 +20,31 @@ A Moodle PHP environment configured for Moodle development based on [Official PH
| PHP 7.0 | Jessie | 7.0-jessie | [](https://travis-ci.com/moodlehq/moodle-php-apache)|Jessie and PHP 7.0 EOL|
| PHP 5.6 | Jessie | 5.6-jessie | [](https://travis-ci.com/moodlehq/moodle-php-apache)|Jessie and PHP 5.6 EOL|
-# Example usage
+## Example usage
The following command will expose the current working directory on port 8080:
```bash
$ docker run --name web0 -p 8080:80 -v $PWD:/var/www/html moodlehq/moodle-php-apache:7.1
```
-# Features
-
+## Features
* Preconfigured with all php extensions required for Moodle development and all database drivers
* Serves wwroot configured at /var/www/html/
-* Verified by [automated tests](https://travis-ci.com/moodlehq/moodle-php-apache)
-
-# Directories
+* For PHP 7.3 and up, both `linux/amd64` and `linux/arm64` images are being built. Note that `linux/arm64` doesn't support the sqlsrv and oci extensions yet. Other than that, both architectures work exactly the same.
+* Verified by [automated tests](https://travis-ci.com/moodlehq/moodle-php-apache).
+* Autobuilt from GHA, on push.
+## Directories
To faciliate testing and easy setup the following directories are created and owned by www-data by default:
+
* `/var/www/moodledata`
* `/var/www/phpunitdata`
* `/var/www/behatdata`
* `/var/www/behatfaildumps`
-# See also
+## See also
This container is part of a set of containers for Moodle development, see also:
+
* [moodle-docker](https://github.com/moodlehq/moodle-docker) a docker-composer based set of tools to get Moodle development running with zero configuration
* [moodle-db-mssql](https://github.com/moodlehq/moodle-db-mssql) Microsoft SQL Server for Linux configured for Moodle development
* [moodle-db-oracle](https://github.com/moodlehq/moodle-db-oracle) Oracle XE configured for Moodle development