(NOBIDS) ci: add way to publish docker images outside of releases

.github/workflows/publish-docker-images-tagged.yml

@@ -0,0 +1,27 @@
+name: Publish Docker images
+
+on:
+  # Trigger the workflow on push or pull request,
+  # but only for the master branch
+  push:
+    branches:
+      - publish-docker
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - id: pre-step
+        shell: bash
+        run: echo "release-version=$(TZ=UTC0 git show --quiet --date='format-local:%Y%m%d%H%M%S' --format="%cd" $GITHUB_SHA)-$(echo ${GITHUB_SHA:0:6})" >> $GITHUB_OUTPUT
+
+      - name: Publish to Dockerhub Registry
+        uses: elgohr/Publish-Docker-Github-Action@v5
+        with:
+          name: gobitfly/eth2-beaconchain-explorer
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          tags: "${{ steps.pre-step.outputs.release-version }}"
+