Try targetplatform

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
   image:
     env:
       IMAGE_REPO: ${{ secrets.DOCKER_ORG }}/${{ secrets.DOCKER_REPO }}
-      IMAGE_TAG: sha-${{ github.sha }}
+      IMAGE_TAG: sha-${{ github.sha }}-${{ matrix.arch }}
     runs-on:
       - linux
       - self-hosted
@@ -35,6 +35,18 @@ jobs:
           docker tag ${{ env.IMAGE_REPO }}:sha-${{ env.IMAGE_TAG }} ${{ env.IMAGE_REPO }}:latest
           docker push ${{ env.IMAGE_REPO }}:latest
 
+      - name: Cleanup
+        if: always()
+        run: |
+          export COMPOSE_PROJECT_NAME=${COMPOSE_PROJECT_NAME//\//-}
+          docker-compose down --volumes
+          docker rmi -f \
+            ${{ env.IMAGE_REPO }}:${{ env.IMAGE_TAG }} \
+            ${{ env.IMAGE_REPO }}:${GITHUB_REF#refs/heads/}
+          if [[ "$BRANCH" == master ]]; then
+            docker rmi -f ${{ env.IMAGE_REPO }}:latest
+          fi
+
     strategy:
       matrix:
         arch:

Dockerfile

@@ -12,13 +12,12 @@ RUN apk update \
 
 ENV DOCKERIZE_VERSION=0.5.0
 
-RUN apkArch="$(apk --print-arch)"; \
-case "$apkArch" in \
-    armhf) export DOCKERIZE_ARCH='armhf' ;; \
-    x86) export DOCKERIZE_ARCH='amd64' ;; \
-esac;
-
-RUN wget -nv -O - "https://github.com/jwilder/dockerize/releases/download/v${DOCKERIZE_VERSION}/dockerize-linux-${DOCKERIZE_ARCH}-v${DOCKERIZE_VERSION}.tar.gz" | tar -xz -C /usr/local/bin/ -f -
+ARG TARGETPLATFORM
+RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then DOCKERIZE_ARCH=amd64; elif [ "$TARGETPLATFORM" = "linux/arm/v7" ]; then DOCKERIZE_ARCH=armhf; else DOCKERIZE_ARCH=amd64; fi \
+    && echo "TARGETPLATFORM=${TARGETPLATFORM}" \
+    && echo "DOCKERIZE_ARCH=${DOCKERIZE_ARCH}" \
+    && echo "DOCKERIZE_VERSION=${DOCKERIZE_VERSION}" \
+    && wget -nv -O - "https://github.com/jwilder/dockerize/releases/download/v${DOCKERIZE_VERSION}/dockerize-linux-${DOCKERIZE_ARCH}-v${DOCKERIZE_VERSION}.tar.gz" | tar -xz -C /usr/local/bin/ -f -
 
 ENV PATH="$PATH:/opt/restic-pg-dump/bin"