diff --git a/.github/workflows/container_app_pr.yml b/.github/workflows/container_app_pr.yml
new file mode 100644
index 00000000000..f5aa2d1d9b0
--- /dev/null
+++ b/.github/workflows/container_app_pr.yml
@@ -0,0 +1,83 @@
+---
+name: Preview Application Container Image
+
+on:
+    # We only run the push commands if we are asked to by an issue comment with the correct command.
+    # This workflow is always taken from the default branch and runs in repo context with access to secrets.
+    repository_dispatch:
+        types: [ push-image-command ]
+
+env:
+    IMAGE_TAG: unstable
+    BASE_IMAGE_TAG: unstable
+    PLATFORMS: "linux/amd64,linux/arm64"
+
+jobs:
+    deploy:
+        name: "Package & Push"
+        runs-on: ubuntu-latest
+        # Only run in upstream repo - avoid unnecessary runs in forks
+        if: ${{ github.repository_owner == 'IQSS' }}
+        steps:
+            # Checkout the pull request code as when merged
+            - uses: actions/checkout@v3
+              with:
+                  ref: 'refs/pull/${{ github.event.client_payload.pull_request.number }}/merge'
+            - uses: actions/setup-java@v3
+              with:
+                  java-version: "11"
+                  distribution: 'adopt'
+            - uses: actions/cache@v3
+              with:
+                  path: ~/.m2
+                  key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+                  restore-keys: ${{ runner.os }}-m2
+
+            # Note: Accessing, pushing tags etc. to GHCR will only succeed in upstream because secrets.
+            - name: Login to Github Container Registry
+              uses: docker/login-action@v2
+              with:
+                  registry: ghcr.io
+                  username: ${{ secrets.GHCR_USERNAME }}
+                  password: ${{ secrets.GHCR_TOKEN }}
+
+            - name: Set up QEMU for multi-arch builds
+              uses: docker/setup-qemu-action@v2
+
+            # Get the image tag from either the command or default to branch name (Not used for now)
+            #-   name: Get the target tag name
+            #    id: vars
+            #    run: |
+            #        tag=${{ github.event.client_payload.slash_command.args.named.tag }}
+            #        if [[ -z "$tag" ]]; then tag=$(echo "${{ github.event.client_payload.pull_request.head.ref }}" | tr '\\/_:&+,;#*' '-'); fi
+            #        echo "IMAGE_TAG=$tag" >> $GITHUB_ENV
+
+            # Set image tag to branch name of the PR
+            - name: Set image tag to branch name
+              run: |
+                  echo "IMAGE_TAG=$(echo "${{ github.event.client_payload.pull_request.head.ref }}" | tr '\\/_:&+,;#*' '-')" >> $GITHUB_ENV
+
+            - name: Deploy multi-arch application container image
+              run: mvn -Pct deploy -Dapp.image.tag=${{ env.IMAGE_TAG }} -Dbase.image.tag=${{ env.BASE_IMAGE_TAG }} -Ddocker.registry=ghcr.io -Ddocker.platforms=${{ env.PLATFORMS }}
+
+            - uses: marocchino/sticky-pull-request-comment@v2
+              with:
+                  header: app-registry-push
+                  hide_and_recreate: true
+                  hide_classify: "OUTDATED"
+                  number: ${{ github.event.client_payload.pull_request.number }}
+                  message: |
+                      :package: Pushed preview application image as
+                      ```
+                      ghcr.io/gdcc/dataverse:${{ env.IMAGE_TAG }}
+                      ```
+                      :ship: [See on GHCR](https://github.com/orgs/gdcc/packages/container/package/dataverse). Use by referencing with full name as printed above, mind the registry name.
+
+            # Leave a note when things have gone sideways
+            - uses: peter-evans/create-or-update-comment@v3
+              if: ${{ failure() }}
+              with:
+                  issue-number: ${{ github.event.client_payload.pull_request.number }}
+                  body: >
+                      :package: Could not push preview image :disappointed:.
+                      See [log](https://github.com/IQSS/dataverse/actions/runs/${{ github.run_id }}) for details.
\ No newline at end of file
diff --git a/.github/workflows/container_app_push.yml b/.github/workflows/container_app_push.yml
index 2ea184c4f48..ba9ecc28f47 100644
--- a/.github/workflows/container_app_push.yml
+++ b/.github/workflows/container_app_push.yml
@@ -18,10 +18,11 @@ env:
     BASE_IMAGE_TAG: unstable
     REGISTRY: "" # Empty means default to Docker Hub
     PLATFORMS: "linux/amd64,linux/arm64"
+    MASTER_BRANCH_TAG: alpha
 
 jobs:
     build:
-        name: Build & deploy
+        name: "Build & Test"
         runs-on: ubuntu-latest
         permissions:
             contents: read
@@ -49,12 +50,18 @@ jobs:
             - name: Build app container image with local architecture
               run: mvn -Pct package
 
-            # Note: Accessing, pushing tags etc. to DockerHub or GHCR will only succeed in upstream because secrets.
+            # TODO: add smoke / integration testing here
 
-            # Run this when triggered via push or schedule as reused workflow from base / maven unit tests
-            - if: ${{ github.event_name != 'pull_request' && github.ref_name == 'develop' }}
-              name: Push description to DockerHub
-              uses: peter-evans/dockerhub-description@v3
+    hub-description:
+        needs: build
+        name: Push image description to Docker Hub
+        # Run this when triggered via push or schedule as reused workflow from base / maven unit tests.
+        # Excluding PRs here means we will have no trouble with secrets access. Also avoid runs in forks.
+        if: ${{ github.event_name != 'pull_request' && github.ref_name == 'develop' && github.repository_owner == 'IQSS' }}
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v3
+            - uses: peter-evans/dockerhub-description@v3
               with:
                   username: ${{ secrets.DOCKERHUB_USERNAME }}
                   password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -62,6 +69,45 @@ jobs:
                   short-description: "Dataverse Application Container Image providing the executable"
                   readme-filepath: ./src/main/docker/README.md
 
+    # Note: Accessing, pushing tags etc. to DockerHub or GHCR will only succeed in upstream because secrets.
+    # We check for them here and subsequent jobs can rely on this to decide if they shall run.
+    check-secrets:
+        needs: build
+        name: Check for Secrets Availability
+        runs-on: ubuntu-latest
+        outputs:
+            available: ${{ steps.secret-check.outputs.available }}
+        steps:
+            - id: secret-check
+              # perform secret check & put boolean result as an output
+              shell: bash
+              run: |
+                  if [ "${{ secrets.DOCKERHUB_TOKEN }}" != '' ]; then
+                      echo "available=true" >> $GITHUB_OUTPUT;
+                  else
+                      echo "available=false" >> $GITHUB_OUTPUT;
+                  fi
+
+    deploy:
+        needs: check-secrets
+        name: "Package & Publish"
+        runs-on: ubuntu-latest
+        # Only run this job if we have access to secrets. This is true for events like push/schedule which run in
+        # context of main repo, but for PRs only true if coming from the main repo! Forks have no secret access.
+        if: needs.check-secrets.outputs.available == 'true'
+        steps:
+            - uses: actions/checkout@v3
+            - uses: actions/setup-java@v3
+              with:
+                  java-version: "11"
+                  distribution: 'adopt'
+            - uses: actions/cache@v3
+              with:
+                  path: ~/.m2
+                  key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+                  restore-keys: ${{ runner.os }}-m2
+
+            # Depending on context, we push to different targets. Login accordingly.
             - if: ${{ github.event_name != 'pull_request' }}
               name: Log in to Docker Hub registry
               uses: docker/login-action@v2
@@ -82,8 +128,8 @@ jobs:
             - name: Re-set image tag based on branch (if master)
               if: ${{ github.ref_name == 'master' }}
               run: |
-                  echo "IMAGE_TAG=alpha" >> $GITHUB_ENV
-                  echo "BASE_IMAGE_TAG=alpha" >> $GITHUB_ENV
+                  echo "IMAGE_TAG=${{ env.MASTER_BRANCH_TAG }}" >> $GITHUB_ENV
+                  echo "BASE_IMAGE_TAG=${{ env.MASTER_BRANCH_TAG }}" >> $GITHUB_ENV
             - name: Re-set image tag and container registry when on PR
               if: ${{ github.event_name == 'pull_request' }}
               run: |
@@ -97,6 +143,11 @@ jobs:
               if: ${{ github.event_name == 'pull_request' }}
               with:
                   header: app-registry-push
+                  hide_and_recreate: true
+                  hide_classify: "OUTDATED"
                   message: |
-                      Pushed preview application image as [`ghcr.io/gdcc/dataverse:${{ env.IMAGE_TAG }}`](https://github.com/orgs/gdcc/packages/container/package/dataverse).
-                      Use it by referencing it with its full name as printed above.
+                      :package: Pushed preview application image as
+                      ```
+                      ghcr.io/gdcc/dataverse:${{ env.IMAGE_TAG }}
+                      ```
+                      :ship: [See on GHCR](https://github.com/orgs/gdcc/packages/container/package/dataverse). Use by referencing with full name as printed above, mind the registry name.
diff --git a/.github/workflows/pr_comment_commands.yml b/.github/workflows/pr_comment_commands.yml
new file mode 100644
index 00000000000..5ff75def623
--- /dev/null
+++ b/.github/workflows/pr_comment_commands.yml
@@ -0,0 +1,20 @@
+name: PR Comment Commands
+on:
+    issue_comment:
+        types: [created]
+jobs:
+    dispatch:
+        # Avoid being triggered by forks in upstream
+        if: ${{ github.repository_owner == 'IQSS' }}
+        runs-on: ubuntu-latest
+        steps:
+            - name: Dispatch
+              uses: peter-evans/slash-command-dispatch@v3
+              with:
+                  # This token belongs to @dataversebot and has sufficient scope.
+                  token: ${{ secrets.GHCR_TOKEN }}
+                  commands: |
+                      push-image
+                  repository: IQSS/dataverse
+                  # Commenter must have at least write permission to repo to trigger dispatch
+                  permission: write