diff --git a/.github/workflows/build-images.yml b/.github/workflows/build-images.yml
index 7e30614..87eb7ff 100644
--- a/.github/workflows/build-images.yml
+++ b/.github/workflows/build-images.yml
@@ -4,10 +4,10 @@ on:
   workflow_dispatch:
   workflow_call:
     inputs:
-      is_pull_request:
+      push-images:
         required: true
         type: boolean
-      sem_ver:
+      sem-ver:
         required: false
         type: string
     secrets:
@@ -43,7 +43,7 @@ jobs:
             context: "./services/base/JupyterLab"
     runs-on: ubuntu-latest
     env:
-      SEMVER: ${{ inputs.is_propagated_pull_request && inputs.sem_ver || ''}}
+      SEMVER: ${{ inputs.is_propagated_pull_request && inputs.sem-ver || ''}}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v3
@@ -63,7 +63,7 @@ jobs:
             type=semver,pattern={{major}}
             type=sha,prefix=sha-
       - name: Login to Gitlab registry
-        if: github.event_name != 'pull_request' && inputs.is_propagated_pull_request == false
+        if: inputs.push_images
         uses: docker/login-action@v2
         with:
           registry: registry.gitlab.inria.fr/cromac/automateddiscoverytool
@@ -73,6 +73,6 @@ jobs:
         uses: docker/build-push-action@v4
         with:
           context: ${{ matrix.context }}
-          push: ${{ github.event_name != 'pull_request' && inputs.is_propagated_pull_request == false }}
+          push: ${{ inputs.push_images }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..8a8581d
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,36 @@
+# This workflow reacts to pull requests.
+#
+# If a pull request from the
+# release-please workflow is detected, documentation and image building is done
+# in the PR as a CI test.
+#
+# If a pull request from the release-please workflow is merged, the release's
+# semantic version is retrieved and the previous jobs are run, with the images
+# being pushed.
+
+on:
+  pull_request:
+jobs:
+  if-merged:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+      - name: Retrieve semantic version from PR
+        id: retrieve-semver
+        run: |
+          if [[ ${{ github.event.pull_request.title }} =~ ^chore.*:\ release.*\ ([0-9\.]+)$ ]]; then
+            echo "Got PR: ${{ github.event.pull_request.title }}"
+            echo "semver=${BASH_REMATCH[1]}" >> $GITHUB_OUTPUT
+          fi
+    outputs:
+      sem-ver: ${{ steps.retrieve-semver.outputs.semver }}
+  build-docs:
+    if: "${{ contains(github.event.pull_request.labels.*.name, autorelease: pending }}"
+    uses: ./.github/workflows/build-docs.yml
+  build-images:
+    if: "${{ contains(github.event.pull_request.labels.*.name, autorelease: pending }}"
+    uses: ./.github/workflows/build-images.yml
+    secrets: inherit
+    with:
+      push-images: ${{ github.event.pull_request.merged }}
+      sem-ver: ${{ jobs.if-merged.outputs.sem-ver }}
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 847c9f5..03ed097 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -16,18 +16,6 @@ jobs:
       - id: release-please
         uses: google-github-actions/release-please-action@v3
         with:
+          pull-request-title-pattern: "chore${scope}: release${component} ${version}"
           release-type: simple
           default-branch: dev
-    outputs:
-      releases_created: ${{ steps.release-please.releases_created }}
-      sem_ver: ${{ steps.release-pr.major }}.${{ steps.release-pr.minor }}.${{ steps.release-pr.patch }}
-  build-docs:
-    needs: release-pr
-    uses: ./.github/workflows/build-docs.yml
-  build-images:
-    needs: release-pr
-    uses: ./.github/workflows/build-images.yml
-    with:
-      is_pull_request: ${{ needs.release-pr.outputs.releases_created }}
-      sem_ver: ${{ needs.release-pr.outputs.sem_ver }}
-    secrets: inherit