Maintain floating "latest"-Release

.github/workflows/build.yml

@@ -163,10 +163,25 @@ jobs:
         id: create_release
         run: |
           set -xe
-          NAME="Auto-Build $(date +'%Y-%m-%d %H:%M')"
+          RELDATE="$(date +'%Y-%m-%d %H:%M')"
+          NAME="Auto-Build $RELDATE"
           TAGNAME="autobuild-$(date +'%Y-%m-%d-%H-%M')"
           hub release create $(for a in artifacts/*.{zip,tar.xz}; do echo -a $a; done) -m "$NAME" -t "master" "$TAGNAME"
           echo "::set-output name=tag_name::${TAGNAME}"
+          echo "::set-output name=rel_date::${RELDATE}"
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+      - name: Update Latest
+        run: |
+          set -xe
+          mkdir latest_artifacts
+          ./util/repack_latest.sh latest_artifacts artifacts/*.{zip,tar.xz}
+          NAME="Latest Auto-Build (${{ steps.create_release.outputs.rel_date }})"
+          TAGNAME="latest"
+          hub release delete "$TAGNAME" || true
+          git tag -d "$TAGNAME" || true
+          git push --delete origin "$TAGNAME" || true
+          hub release create $(for a in latest_artifacts/*; do echo -a $a; done) -m "$NAME" -t "master" "$TAGNAME"
         env:
           GITHUB_TOKEN: ${{ github.token }}
       - name: Update Wiki