First version of the mydump container

.github/workflows/image-publish.yaml

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+name: Publish a container image
+
+on:
+  push:
+  release:
+    types: [published, edited]
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    permissions:
+      packages: write
+    steps:
+      - uses: actions/checkout@v6
+      - uses: docker/setup-qemu-action@v3
+      - run: ./build/set_image_metadata
+
+      - name: Build an image
+        id: build-image
+        uses: redhat-actions/buildah-build@v2
+        with:
+          image: ${{ github.event.repository.name }}-dev
+          tags: ${{ env.TAGS }}
+          platforms: linux/amd64, linux/arm64/v8
+          containerfiles: |
+            ./Containerfile
+          labels: ${{ env.ANNOTATIONS }}
+
+      - name: Push the image to GHCR
+        id: push-to-ghcr
+        uses: redhat-actions/push-to-registry@v2
+        with:
+          image: ${{ steps.build-image.outputs.image }}
+          tags: ${{ steps.build-image.outputs.tags }}
+          registry: ghcr.io/${{ github.repository_owner }}
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+
+      - name: Set the version tag (only if released)
+        id: retag-version
+        if: (github.event_name == 'release' && (github.event.action == 'published' || github.event.action == 'edited'))
+        run: |
+          buildah tag \
+          ${{ steps.build-image.outputs.image }}:${{ github.sha }} \
+          ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:latest
+          buildah tag \
+          ${{ steps.build-image.outputs.image }}:${{ github.sha }} \
+          ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:${{ github.event.release.tag_name }}
+
+      - name: Push the release image to GHCR
+        if: (github.event_name == 'release' && (github.event.action == 'published' || github.event.action == 'edited'))
+        uses: redhat-actions/push-to-registry@v2
+        with:
+          tags: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:latest ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}:${{ github.event.release.tag_name }}
+          username: ${{ github.actor }}
+          password: ${{ github.token }}

Containerfile

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+FROM mariadb:12
+
+RUN apt-get update && apt-get install -y \
+        curl \
+        bash \
+        rclone
+
+COPY entrypoint.sh /
+RUN chmod +x /entrypoint.sh
+
+WORKDIR /backup
+ENTRYPOINT /entrypoint.sh

build/set_image_metadata

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+#! /usr/bin/env bash
+# --------------------------------------------
+# -- Should be used in Github Actions
+# --------------------------------------------
+#
+# --------------------------------------------
+# -- To have a multi-line env var in github, 
+# --  we must define the EOF
+# --------------------------------------------
+EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
+echo "ANNOTATIONS<<$EOF" >> "$GITHUB_ENV"
+
+ANNOTATIONS=$(cat << EOF
+org.opencontainers.image.created=$(date +"%Y-%m-%d %T")
+org.opencontainers.image.authors=$GITHUB_ACTOR
+org.opencontainers.image.url=$GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID
+org.opencontainers.image.documentation=$GITHUB_SERVER_URL/$GITHUB_REPOSITORY/blob/main/README.md
+org.opencontainers.image.source=$GITHUB_SERVER_URL/$GITHUB_REPOSITORY
+org.opencontainers.image.version=$GITHUB_SHA
+org.opencontainers.image.revision=$GITHUB_SHA
+org.opencontainers.image.vendor=$GITHUB_REPOSITORY_OWNER
+org.opencontainers.image.license=GNU GENERAL PUBLIC LICENSE v3
+org.opencontainers.image.title=$GITHUB_REPOSITORY
+org.opencontainers.image.description=Backup databases using pg_dump and upload backups using rclone
+EOF
+)
+
+echo "${ANNOTATIONS}" >> "${GITHUB_ENV}"
+echo "$EOF" >> "$GITHUB_ENV"
+# --------------------------------------------
+# -- Set the image tag by commit sha
+# --------------------------------------------
+echo "TAGS=${GITHUB_SHA}" >> "${GITHUB_ENV}"
+
+

entrypoint.sh

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+#!/bin/bash
+set -e
+
+echo "Prepare configuration for script"
+TIMESTAMP=$(date +%F_%R)
+BACKUP_FILE=${DB_NAME}-${TIMESTAMP}.sql
+BACKUP_FILE_LATEST=${DB_NAME}-latest.sql.gz
+DB_HOST=${DB_HOST:-localhost}
+DB_PASSWORD=$(cat ${DB_PASSWORD_FILE})
+
+if [[ -z "${STORAGE_BUCKET}" ]]; then
+  echo "Variable STORAGE_BUCKET must be set"
+  exit 1
+fi
+
+# create login credential file
+echo "[mysqldump]
+password=${DB_PASSWORD}" > ~/.my.cnf
+chmod 0600 ~/.my.cnf
+
+echo "Start creating backup"
+mariadb-dump -h ${DB_HOST} -u ${DB_USER} -P ${DB_PORT} --single-transaction --dump-date ${DB_NAME} > ${BACKUP_FILE}
+if [[ $? -eq 0 ]]; then
+    gzip ${BACKUP_FILE}
+else 
+    echo >&2 "DB backup failed" 
+    exit 1
+fi
+
+## copy to destination
+echo "Upload to storage"
+BACKUP_FILE_ARCHIVED=${BACKUP_FILE}.gz
+
+rclone copyto "./${BACKUP_FILE_ARCHIVED}" "storage://${STORAGE_BUCKET}/${DB_NAME}/${BACKUP_FILE_ARCHIVED}" 
+rclone copyto "./${BACKUP_FILE_ARCHIVED}" "storage://${STORAGE_BUCKET}/${DB_NAME}/${BACKUP_FILE_LATEST}" 
+
+if test $? -ne 0 
+then
+	exit 1;
+fi