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‎.github/workflows/build.yml‎

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name: Build / Test / Push
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on:
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push:
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branches:
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- '**'
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workflow_dispatch:
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env:
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BUILD_SUFFIX: -build-${{ github.run_id }}_${{ github.run_attempt }}
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DOCKER_METADATA_SET_OUTPUT_ENV: 'true'
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jobs:
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build:
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runs-on: ${{ matrix.runner }}
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outputs:
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image-arm64: ${{ steps.gen-output.outputs.image-arm64 }}
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image-x64: ${{ steps.gen-output.outputs.image-x64 }}
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strategy:
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fail-fast: false
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matrix:
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runner:
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- ubuntu-24.04
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- ubuntu-24.04-arm
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Login to GitHub Container Registry
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uses: docker/login-action@v3
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with:
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registry: ghcr.io
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- id: build-meta
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name: Docker meta
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uses: docker/metadata-action@v5
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with:
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images: ghcr.io/${{ github.repository }}
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tags: type=sha,suffix=${{ env.BUILD_SUFFIX }}
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# Build cache is shared among all builds of the same architecture
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- id: cache-meta
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name: Docker meta
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uses: docker/metadata-action@v5
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with:
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images: ghcr.io/${{ github.repository }}
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tags: type=raw,value=buildcache-${{ runner.arch }}
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- id: get-registry
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name: Get the sanitized registry name
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run: |
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echo "registry=$(echo '${{ steps.build-meta.outputs.tags }}' | cut -f1 -d:)" | tee -a "$GITHUB_OUTPUT"
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- id: build
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name: Build/push the arch-specific image
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uses: docker/build-push-action@v6
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with:
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cache-from: type=registry,ref=${{ steps.cache-meta.outputs.tags }}
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cache-to: type=registry,ref=${{ steps.cache-meta.outputs.tags }},mode=max
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labels: ${{ steps.build-meta.outputs.labels }}
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provenance: mode=max
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sbom: true
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tags: ${{ steps.get-registry.outputs.registry }}
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outputs: type=image,push-by-digest=true,push=true
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- id: gen-output
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name: Write arch-specific image digest to outputs
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run: |
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echo "image-${RUNNER_ARCH,,}=${{ steps.get-registry.outputs.registry }}@${{ steps.build.outputs.digest }}" | tee -a "$GITHUB_OUTPUT"
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merge:
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runs-on: ubuntu-24.04
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needs: build
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env:
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DOCKER_APP_IMAGE_ARM64: ${{ needs.build.outputs.image-arm64 }}
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DOCKER_APP_IMAGE_X64: ${{ needs.build.outputs.image-x64 }}
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outputs:
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image: ${{ steps.meta.outputs.tags }}
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Login to GitHub Container Registry
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uses: docker/login-action@v3
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with:
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registry: ghcr.io
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- id: meta
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name: Generate tag for the app image
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uses: docker/metadata-action@v5
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with:
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images: ghcr.io/${{ github.repository }}
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tags: type=sha,suffix=${{ env.BUILD_SUFFIX }}
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- name: Push the multi-platform app image
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run: |
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docker buildx imagetools create \
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--tag "$DOCKER_METADATA_OUTPUT_TAGS" \
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"$DOCKER_APP_IMAGE_ARM64" "$DOCKER_APP_IMAGE_X64"
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test:
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runs-on: ubuntu-24.04
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needs: merge
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env:
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COMPOSE_FILE: docker-compose.yml:docker-compose.ci.yml
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DOCKER_APP_IMAGE: ${{ needs.merge.outputs.image }}
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Login to GitHub Container Registry
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uses: docker/login-action@v3
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with:
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registry: ghcr.io
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- name: Make sure ffprobe is installed
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run: |
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docker pull $DOCKER_APP_IMAGE
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docker run --rm $DOCKER_APP_IMAGE ffprobe --help
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push:
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runs-on: ubuntu-24.04
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needs:
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- merge
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- test
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env:
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DOCKER_APP_IMAGE: ${{ needs.merge.outputs.image }}
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Login to GitHub Container Registry
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uses: docker/login-action@v3
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with:
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registry: ghcr.io
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- name: Produce permanent image tags
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uses: docker/metadata-action@v5
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with:
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images: ghcr.io/${{ github.repository }}
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tags: |
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type=sha
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type=ref,event=branch
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type=raw,value=latest,enable={{is_default_branch}}
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- name: Retag and push the image
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run: |
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docker pull "$DOCKER_APP_IMAGE"
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echo "$DOCKER_METADATA_OUTPUT_TAGS" | tr ' ' '\n' | xargs -n1 docker tag "$DOCKER_APP_IMAGE"
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docker push --all-tags "$(echo "$DOCKER_APP_IMAGE" | cut -f1 -d:)"

‎.github/workflows/release.yml‎

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name: Push Release Tags
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on:
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push:
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tags:
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- '**'
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workflow_dispatch:
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env:
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DOCKER_METADATA_SET_OUTPUT_ENV: 'true'
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jobs:
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retag:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Login to GitHub Container Registry
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uses: docker/login-action@v3
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with:
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registry: ghcr.io
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- name: Determine the sha-based image tag to retag
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id: get-base-image
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uses: docker/metadata-action@v5
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with:
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images: ghcr.io/${{ github.repository }}
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tags: type=sha
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- name: Verify that the image was previously built
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env:
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BASE_IMAGE: ${{ steps.get-base-image.outputs.tags }}
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run: |
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docker pull "$BASE_IMAGE"
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- name: Produce release tags
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id: tag-meta
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uses: docker/metadata-action@v5
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with:
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images: ghcr.io/${{ github.repository }}
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flavor: latest=false
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tags: |
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type=ref,event=tag
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type=semver,pattern={{major}}
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type=semver,pattern={{major}}.{{minor}}
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type=semver,pattern={{version}}
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- name: Retag the pulled image
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env:
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BASE_IMAGE: ${{ steps.get-base-image.outputs.tags }}
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run: |
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echo "$DOCKER_METADATA_OUTPUT_TAGS" | tr ' ' '\n' | xargs -n1 docker tag "$BASE_IMAGE"
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docker push --all-tags "$(echo "$BASE_IMAGE" | cut -f1 -d:)"

‎Dockerfile‎

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FROM debian:stable-slim
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RUN apt-get -y update && \
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apt-get -y upgrade && \
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apt-get -y install \
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ffmpeg && \
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rm -rf /var/lib/apt/lists/* && \
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ffprobe --help

‎LICENSE‎

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MIT License
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Copyright (c) 2025 The Regents of the University of California
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md‎

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# Docker image containing the ffmpeg suite
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A simple Debian-based Docker image with the ffmpeg package installed.

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