get rid of this annoying default "latest" tag useage

to squash

.github/workflows/main-docker.yml

@@ -129,6 +129,8 @@ jobs:
             type=ref,event=branch
             type=ref,event=tag
             type=sha
+          flavor: |
+            latest=false
       
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -213,7 +215,9 @@ jobs:
           images: |
             ${{ env.GHCR_REGISTRY }}/${{ env.IMAGE_NAME }}
             ${{ env.DOCKERHUB_REGISTRY }}/${{ env.IMAGE_NAME }}
-      
+          flavor: |
+            latest=false
+
       - name: Login to GHCR
         uses: docker/login-action@v2
         with:
@@ -234,6 +238,17 @@ jobs:
           # Extract the branch or tag name from the ref
           REF_NAME=$(echo "${GITHUB_REF}" | sed 's/refs\/heads\///' | sed 's/refs\/tags\///')
         
+          # Create and push the manifest list with both the branch/tag name and the commit SHA
+          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+            -t ${{ env.GHCR_REGISTRY }}/${{ env.IMAGE_NAME }}:${REF_NAME} \
+            $(printf '${{ env.GHCR_REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)
+          
+          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+            -t ${{ env.DOCKERHUB_REGISTRY }}/${{ env.IMAGE_NAME }}:${REF_NAME} \
+            $(printf '${{ env.DOCKERHUB_REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)
+
+          # If the ref is a tag, also tag the image as stable as this is part of a 'release'
+          # and only go in the `if` if there is NOT a `-` in the tag's name, due to tagging of `-alpha`, `-beta`, etc...
           if [[ "${GITHUB_REF}" == refs/tags/* && ! "${REF_NAME}" =~ - ]]; then
             # First create stable tags
             docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \