diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
deleted file mode 100644
index 1a06c0e0..00000000
--- a/.github/workflows/build.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-name: ci
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  test_image:
-    uses: ./.github/workflows/lib_test_image.yml
-    with:
-      cache-from: type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest
-
-  tests:
-    needs: test_image
-    uses: ./.github/workflows/lib_tests.yml
-
-  testscleanup:
-    needs: tests
-    uses: ./.github/workflows/lib_test_cleanup.yml
-
-  push:
-    needs: tests
-    uses: ./.github/workflows/lib_push_image.yml
-    with:
-      tags: ghcr.io/${{ github.repository }}:${{ github.run_number }},ghcr.io/${{ github.repository }}:latest
-      cache-from: |
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ github.ref_name }}-amd64
-      cache-to: type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest,mode=max
diff --git a/.github/workflows/build_dev.yml b/.github/workflows/build_dev.yml
deleted file mode 100644
index b8a79325..00000000
--- a/.github/workflows/build_dev.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: ci dev
-
-on:
-  push:
-    branches:
-      - dev
-      - dev-*
-
-jobs:
-  test_image:
-    uses: ./.github/workflows/lib_test_image.yml
-    with:
-      cache-from: |
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ github.ref_name }}
-
-  tests:
-    needs: test_image
-    uses: ./.github/workflows/lib_tests.yml
-  
-  testscleanup:
-    needs: tests
-    uses: ./.github/workflows/lib_test_cleanup.yml
-
-  push:
-    needs: tests
-    uses: ./.github/workflows/lib_push_image.yml
-    with:
-      tags: ghcr.io/${{ github.repository }}:${{ github.ref_name }}
-      cache-from: |
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ github.ref_name }}
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ github.ref_name }}-amd64
-      cache-to: type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ github.ref_name }},mode=max
diff --git a/.github/workflows/lib_test_image.yml b/.github/workflows/build_image.yml
similarity index 85%
rename from .github/workflows/lib_test_image.yml
rename to .github/workflows/build_image.yml
index ce9ddb98..2e06c823 100644
--- a/.github/workflows/lib_test_image.yml
+++ b/.github/workflows/build_image.yml
@@ -6,6 +6,9 @@ permissions:
 on:
   workflow_call:
     inputs:
+      build-tag:
+        required: true
+        type: string
       cache-from:
         required: true
         type: string
@@ -30,10 +33,10 @@ jobs:
           file: dev/Dockerfile
           platforms: linux/amd64
           outputs: type=docker,dest=/tmp/myimage.tar
-          tags: ghcr.io/${{ github.repository }}:${{ github.ref_name }}
+          tags: ghcr.io/${{ github.repository }}:${{ inputs.build-tag }}
           cache-from: ${{ inputs.cache-from }}
           # specific "cache-to" here as otherwise it would override the latest multi-platform cache with this amd64-only one
-          cache-to: type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ github.ref_name }}-amd64,mode=max
+          cache-to: type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ inputs.build-tag }}-amd64,mode=max
 
       - name: Upload artifact
         uses: actions/upload-artifact@v3
diff --git a/.github/workflows/build_pr.yml b/.github/workflows/build_pr.yml
index 01ed1902..ae11cee8 100644
--- a/.github/workflows/build_pr.yml
+++ b/.github/workflows/build_pr.yml
@@ -1,24 +1,45 @@
-name: ci pr
+name: pull request ci
 
 on:
-  push:
-    branches-ignore:
+  pull_request:
+    branches:
       - main
-      - dev
-      - dev-*
-
+      
 jobs:
-  test_image:
-    uses: ./.github/workflows/lib_test_image.yml
+  tag:
+    name: get latest tag
+    runs-on: ubuntu-latest
+    outputs:
+      tag: ${{ steps.doit.outputs.new }}
+    steps:
+      - uses: actions/checkout@v3
+      - id: doit
+        env:
+          FALLBACK_VERSION: "1.0.0"
+        run: |
+          latest=$(git for-each-ref --sort=-creatordate --count 1 --format="%(refname:short)" "refs/tags/v*" | cut -b 2-)
+          if [[ $latest -eq "" ]]; then
+            latest=$FALLBACK_VERSION
+            echo "No tag found, using fallback: $latest"
+          fi
+          new=$(echo $latest | awk -F. '{OFS="."; $NF+=1; print $0}')
+          echo "new=$new" >> $GITHUB_OUTPUT
+  
+  build_img:
+    needs: tag
+    uses: ./.github/workflows/build_image.yml
     with:
+      build-tag: ${{ needs.tag.outputs.tag }}-${{ github.run_id }}-dev
       cache-from: |
         type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest
-        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ github.ref_name }}
+        type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ needs.tag.outputs.tag }}-${{ github.run_id }}-dev
 
   tests:
-    needs: test_image
-    uses: ./.github/workflows/lib_tests.yml
-  
+   needs: [tag, build_img]
+   uses: ./.github/workflows/run_tests.yml
+   with:
+    build-tag: ${{ needs.tag.outputs.tag }}-${{ github.run_id }}-dev
+
   testscleanup:
-    needs: tests
-    uses: ./.github/workflows/lib_test_cleanup.yml
+   needs: tests
+   uses: ./.github/workflows/test_cleanup.yml
diff --git a/.github/workflows/lib_push_image.yml b/.github/workflows/lib_push_image.yml
deleted file mode 100644
index 77f7bd36..00000000
--- a/.github/workflows/lib_push_image.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-name: push image
-
-on:
-  workflow_call:
-    inputs:
-      cache-from:
-        required: true
-        type: string
-      cache-to:
-        required: true
-        type: string
-      tags:
-        required: true
-        type: string
-
-jobs:
-  doit:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-      - name: Login to GHCR
-        uses: docker/login-action@v1 
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Build and push
-        uses: docker/build-push-action@v3
-        with:
-          file: dev/Dockerfile
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: ${{ inputs.tags }}
-          cache-from: ${{ inputs.cache-from }}
-          cache-to: ${{ inputs.cache-to }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..08e43b23
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,62 @@
+name: release tag
+
+on:
+  release:
+    types:
+      - [created]
+
+jobs:
+  tag:
+    runs-on: ubuntu-latest
+    name: get latest tag
+    outputs:
+      tag: ${{ steps.doit.outputs.new }}
+    steps:
+      - id: doit
+        $run: echo "new=$(echo ${{ github.ref_name }} | cut -b 2-)" >> $GITHUB_OUTPUT
+
+  build_img:
+    needs: get_tag
+    uses: ./.github/workflows/build_image.yml
+    with:
+      build-tag: ${{ needs.tag.outputs.tag }}
+      cache-from: type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest
+
+  tests:
+    needs: [tag, test_image]
+    uses: ./.github/workflows/run_tests.yml
+    with:
+      build-tag: ${{ needs.tag.outputs.tag }}
+
+  testscleanup:
+    needs: [tag, tests]
+    uses: ./.github/workflows/test_cleanup.yml
+    with:
+      build-tag: ${{ needs.tag.outputs.tag }}
+
+  push:
+    needs: [tag, tests]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to GHCR
+        uses: docker/login-action@v1 
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          file: dev/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ghcr.io/${{ github.repository }}:${{ github.run_number }},ghcr.io/${{ github.repository }}:${{ needs.tag.outputs.tag }}
+          cache-from: |
+            type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest
+            type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:${{ needs.tag.outputs.tag }}-amd64
+          cache-to: type=registry,ref=ghcr.io/${{ github.repository }}-builder-cache:latest,mode=max
diff --git a/.github/workflows/lib_tests.yml b/.github/workflows/run_tests.yml
similarity index 82%
rename from .github/workflows/lib_tests.yml
rename to .github/workflows/run_tests.yml
index f5b3ab3e..f6d4438f 100644
--- a/.github/workflows/lib_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -2,6 +2,10 @@ name: tests
 
 on:
   workflow_call:
+    inputs:
+      build-tag:
+        required: true
+        type: string
 
 jobs:
   style:
@@ -33,15 +37,14 @@ jobs:
 
     services:
       mysql:
-        image: mysql:5
-        env:
-          MYSQL_ROOT_PASSWORD: root
+        image: mysql:8
         ports:
         - 8877:3306
         # needed because the container does not provide a healthcheck
-        options: --health-cmd "mysqladmin ping" --health-interval 10s --health-timeout 5s --health-retries=5
+        options: --health-cmd "mysqladmin ping" --health-interval 10s --health-timeout 5s --health-retries=5 -e MYSQL_ROOT_PASSWORD=root --entrypoint sh mysql -c "exec docker-entrypoint.sh mysqld --default-authentication-plugin=mysql_native_password"
+
       postgres:
-        image: postgres:10
+        image: postgres:15
         env:
           POSTGRES_USER: root
           POSTGRES_PASSWORD: root
@@ -59,15 +62,14 @@ jobs:
           path: /tmp
 
       - name: Load Docker images from previous workflows
-        run: |
-          docker load --input /tmp/myimage.tar
+        run: docker load --input /tmp/myimage.tar
 
       - name: run tests
         run: |
           docker run --network host \
                      -e SURF_DATABASE_URL=${{ matrix.database.url }} \
                      -v $(pwd)/cov/:/report \
-                     ghcr.io/${{ github.repository }}:${{ github.ref_name }} \
+                     ghcr.io/${{ github.repository }}:${{ inputs.build-tag }} \
                      sh -c 'pip install -r requirements_test.txt && pytest -n4 --cov --cov-report=xml:/report/coverage.xml'
 
       - uses: codecov/codecov-action@v3
diff --git a/.github/workflows/lib_test_cleanup.yml b/.github/workflows/test_cleanup.yml
similarity index 100%
rename from .github/workflows/lib_test_cleanup.yml
rename to .github/workflows/test_cleanup.yml