breaking: Use inofficial mazzolino/docker:20.10.12-dind to allow for armv7 builds again

.gitlab-ci.yml

@@ -22,7 +22,7 @@ test docker:
     - docker buildx build
       --push
       --no-cache
-      --platform linux/amd64,linux/arm64
+      --platform linux/amd64,linux/arm64,linux/arm/v7
       --tag "index.docker.io/$DOCKERHUB_USER/$DOCKERHUB_REPO:develop-$CI_COMMIT_SHORT_SHA"
       --tag "ghcr.io/$DOCKERHUB_USER/$DOCKERHUB_REPO:develop-$CI_COMMIT_SHORT_SHA" .
   except:
@@ -70,7 +70,7 @@ build:
     - docker buildx build
       --push
       --no-cache
-      --platform linux/amd64,linux/arm64
+      --platform linux/amd64,linux/arm64,linux/arm/v7
       --tag "ghcr.io/$DOCKERHUB_USER/$DOCKERHUB_REPO:$CI_COMMIT_TAG"
       --tag "ghcr.io/$DOCKERHUB_USER/$DOCKERHUB_REPO:latest"
       --tag "index.docker.io/$DOCKERHUB_USER/$DOCKERHUB_REPO:$CI_COMMIT_TAG"

Dockerfile

@@ -19,7 +19,7 @@ RUN \
     chmod a+x \
       /discord.sh
 
-FROM docker:20.10.12-dind-alpine3.15
+FROM mazzolino/docker:20.10.12-dind
 
 LABEL maintainer="Griefed <griefed@griefed.de>"
 LABEL description="Provides GitLab Semantic Release, buildx, JDK 8, NodeJS for Griefed's GitLab CI/CD pipelines."