[github-actions] Docker: Build for linux/amd64,linux/arm64 (#26)

Author: SerhatG

.github/workflows/on-pull_request-opened-synchronize-reopened.yml

@@ -26,3 +26,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           DOCKER_IMAGE_NAME: ${{ github.event.repository.name }}
           DOCKER_WORK_DIRECTORY: repo/source
+          DOCKER_BUILD_PLATFORMS: linux/amd64,linux/arm64

.github/workflows/on-push.yml

@@ -31,3 +31,4 @@ jobs:
           DOCKER_IMAGE_NAME: ${{ github.event.repository.name }}
           DOCKER_WORK_DIRECTORY: repo/source
           ROOT_POM_DIRECTORY: repo/source
+          DOCKER_BUILD_PLATFORMS: linux/amd64,linux/arm64

.github/workflows/on-release-published.yml

@@ -32,3 +32,4 @@ jobs:
           DOCKER_IMAGE_NAME: ${{ github.event.repository.name }}
           DOCKER_WORK_DIRECTORY: repo/source
           ROOT_POM_DIRECTORY: repo/source
+          DOCKER_BUILD_PLATFORMS: linux/amd64,linux/arm64