try pushing to dockerhub

.github/workflows/docker.yml

@@ -23,15 +23,6 @@ jobs:
         -   uses: actions/checkout@v4
             with:
                 fetch-depth: 0
-        # # cache tarred docker image to speed up build on follow up runs
-        # -   uses: actions/cache@v4
-        #     id: cache
-        #     with:
-        #         path: ${{ env.IMAGE }}/image.tar
-        #         key: data
-        # -   if: ${{ steps.cache.outputs.cache-hit != 'true' }}
-        #     name: Load image
-        #     run: docker load -i ${{ env.IMAGE }}/image.tar
         -   name: Build the Docker image
             run: |
                 docker build . --tag ${{env.USER_NAME}}/${{env.REPO_NAME}}
@@ -137,3 +128,46 @@ jobs:
             with:
                 name: output_${{ matrix.type }}
                 path: /home/runner/work/cat12-container/cat12-container/tests/data/ds002799/derivatives
+
+    docker-push:
+        runs-on: ubuntu-latest
+        needs: [one-session]
+        defaults:
+            run:
+                shell: bash -el {0}
+        if: ${{ github.ref == 'refs/heads/main' || github.ref_type == 'tag' }}
+        steps:
+        -   uses: actions/checkout@v4
+            with:
+                fetch-depth: 0
+        -   name: Restore docker image
+            uses: actions/download-artifact@v4
+            with:
+                name: docker
+                path: ${{ env.IMAGE }}
+        -   name: Log in to Docker Hub
+            uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567
+            with:
+                username: ${{ secrets.DOCKERHUB_USERNAME }}
+                password: ${{ secrets.DOCKERHUB_TOKEN }}
+        -   name: Load image
+            run: docker load -i ${{ env.IMAGE }}/image.tar
+        -   name: Push unstable to dockerhub on tags or on main
+            run: |
+                echo "Pushing unstable versions to DockerHub"
+                unstable="${{env.USER_NAME}}/${{env.REPO_NAME}}:unstable"
+                docker tag "${{env.USER_NAME}}/${{env.REPO_NAME}}" "${unstable}"
+                docker push "${unstable}"
+        -   name: Push stable release to dockerhub on tags only
+            if: ${{ github.ref_type == 'tag' }}
+            run: |
+                echo "Pushing stable and latest versions to DockerHub for latest and  ${{ github.ref_name }}"
+
+                unstable="${{env.USER_NAME}}/${{env.REPO_NAME}}:unstable"
+                latest="${{env.USER_NAME}}/${{env.REPO_NAME}}:latest"
+                docker tag "${unstable}" "${latest}"
+                docker push "${latest}"
+
+                tagged_release="${{env.USER_NAME}}/${{env.REPO_NAME}}:${{ github.ref_name }}"
+                docker tag "${unstable}" "${tagged_release}"
+                docker push "${tagged_release}"