Push docker images on demand

.github/workflows/push-docker-image.yml

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+name: Push Docker Image
+
+on:
+  workflow_call:
+    inputs:
+      version:
+        description: The version of Red5 Server to be pushed
+        type: string
+        required: true
+    secrets:
+      dockerhub-password:
+        description: Docker Hub password
+        required: true
+      dockerhub-username:
+        description: Docker Hub username
+        required: true
+      dockerhub-repository:
+        description: Docker Hub repository (e.g., username/repository)
+        required: true
+
+jobs:
+  substring-version:
+    if: github.repository == 'Red5/red5-server'
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.substring.outputs.substring }}
+    steps:
+      - name: Substring version
+        id: substring
+        uses: bhowell2/github-substring-action@1.0.2
+        with:
+          value: ${{ inputs.version }}
+          index_of_str: v
+
+  retrieve-version-parts:
+    if: github.repository == 'Red5/red5-server'
+    runs-on: ubuntu-latest
+    needs: substring-version
+    outputs:
+      major-version: ${{ steps.split.outputs._0 }}
+      minor-version: ${{ steps.split.outputs._1 }}
+      patch-version: ${{ steps.split.outputs._2 }}
+    steps:
+      - name: Retrieve version parts
+        id: split
+        uses: winterjung/split@v2
+        with:
+          msg: ${{ needs.substring-version.outputs.version }}
+          separator: .
+
+  push-docker-image:
+    if: github.repository == 'Red5/red5-server'
+    runs-on: ubuntu-latest
+    needs: retrieve-version-parts
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          repository: 'Red5/docker'
+          path: docker-repo
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v4
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v4
+        with:
+          password: ${{ secrets.dockerhub-password }}
+          username: ${{ secrets.dockerhub-username }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v7
+        env:
+          RED5_VERSION: ${{ needs.retrieve-version-parts.outputs.major-version }}.${{needs.retrieve-version-parts.outputs.minor-version}}.${{ needs.retrieve-version-parts.outputs.patch-version }}
+        with:
+          build-args: |
+            RED5_VERSION=${{ env.RED5_VERSION }}
+          context: .
+          file: ./docker-repo/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            ${{ secrets.dockerhub-repository }}:${{ env.RED5_VERSION }}
+            ${{ secrets.dockerhub-repository }}:${{ needs.retrieve-version-parts.outputs.major-version }}
+            ${{ secrets.dockerhub-repository }}:${{ needs.retrieve-version-parts.outputs.major-version }}.${{ needs.retrieve-version-parts.outputs.minor-version }}
+            ${{ secrets.dockerhub-repository }}:latest

Dockerfile

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+#
+# Red5 + JDK 21 Dockerfile
+#
+# https://github.com/Red5/docker
+# https://hub.docker.com/_/eclipse-temurin
+#
+FROM eclipse-temurin:21-jdk
+LABEL org.opencontainers.image.authors="Paul Gregoire <mondain@gmail.com>"
+
+# Define as an ARG with a default value
+ARG RED5_VERSION=2.0.34
+
+ENV DEBIAN_FRONTEND=noninteractive
+# Assign ARG value to ENV
+ENV RED5_VERSION=${RED5_VERSION}
+
+# Define RED5_HOME variable
+ENV RED5_HOME=/opt/red5
+
+RUN mkdir -p $RED5_HOME && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends wget ca-certificates && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
+    wget -q https://github.com/Red5/red5-server/releases/download/v${RED5_VERSION}/red5-server-${RED5_VERSION}.tar.gz -O red5.tar.gz && \
+    tar -xzf red5.tar.gz -C ${RED5_HOME} --strip-components=1 && \
+    rm -rf red5.tar.gz
+
+# https://docs.docker.com/userguide/dockervolumes/
+VOLUME [ $RED5_HOME ]
+
+WORKDIR /opt/red5
+
+EXPOSE 843 1935 5080 5443 8081 8443
+
+ENTRYPOINT ["./red5.sh"]