addign this for the syntax but this solution is too slow

.gitea/python_build/dockerfile

@@ -0,0 +1,16 @@
+FROM gitea.tryton.geeraert.eu/pi-ux-ce/python:3
+
+ENV PYTHONUNBUFFERED 1
+
+WORKDIR /code/
+
+# Copy only the requirements file first (Changes infrequently)
+COPY requirements.txt ./
+
+
+RUN --mount=type=cache,target=/root/.cache/pip pip install --upgrade pip 
+RUN --mount=type=cache,target=/root/.cache/pip pip list --outdated
+RUN --mount=type=cache,target=/root/.cache/pip pip install --upgrade wheel
+RUN --mount=type=cache,target=/root/.cache/pip pip install --upgrade setuptools
+RUN --mount=type=cache,target=/root/.cache/pip pip install -r requirements.txt
+

.gitea/python_build/requirements.txt

@@ -0,0 +1,15 @@
+django
+psycopg2
+requests
+proxmoxer
+docker
+kubernetes
+ruamel.yaml
+pyyaml
+django-bootstrap-v5
+jinja2
+watchdog
+celery
+redis
+lxml
+requests

.gitea/workflows/dockerfile_runner.yaml

@@ -2,10 +2,89 @@ name: Gitea Actions Demo
 run-name: ${{ gitea.actor }} is testing out Gitea Actions 🚀
 on:
   push:
+  #paths-ignore:
+  #  - 'requirements.txt'
   issue_comment:
     types: [created]
 
 jobs:
+  # Job to check for file changes and set an output
+  changes:
+    runs-on: ubuntu-latest
+    outputs:
+      requirements_changed: ${{ steps.filter.outputs.requirements }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          filters: |
+            requirements:
+              - 'requirements.txt'
+
+  Build-dockerfile:
+    runs-on: ubuntu-latest
+    needs: changes
+    if: ${{ needs.changes.outputs.requirements_changed == 'true' }}
+    steps:
+      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - run: echo "💡 The ${{ gitea.repository }} repository has been cloned to the runner."
+      - name: List files in the repository
+        run: |
+          ls ${{ gitea.workspace }}
+
+      - name: Compute next version
+        id: versioning
+        run: |
+          latest="${{ vars.PYTHON_VERSION }}"
+          next_version=$(echo "$latest" | awk -F. -v OFS=. '{$NF += 1 ; print}')
+          echo "next_version=$next_version" >> $GITHUB_ENV
+          echo "Variables used :"
+          echo "------------------------------------------------"
+          echo "Next version: $next_version"
+
+      - uses: actions/cache@v3
+        with:
+          path: /root/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+
+      - name: inject cache into docker
+        uses: reproducible-containers/buildkit-cache-dance@v3.1.0
+        with:
+          cache-source: /root/.cache/pip
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to gitea
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.tryton.geeraert.eu
+          username: ${{ secrets.USERNAME_GITEA }}
+          password: ${{ secrets.PASSWORD_GITEA }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: "{{defaultContext}}:.gitea/python_build"
+          push: true
+          tags: |
+            gitea.tryton.geeraert.eu/pi-ux-ce/modified-python:latest
+            gitea.tryton.geeraert.eu/pi-ux-ce/modified-python:${{ env.next_version }}
+          cache-from: type=registry,ref=gitea.tryton.geeraert.eu/pi-ux-ce/modified-python:buildcache
+          cache-to: type=registry,ref=gitea.tryton.geeraert.eu/pi-ux-ce/modified-python:buildcache,mode=max
+
+      - name: update version in the variable
+        run: |
+          curl  -X PUT -H "Content-Type: application/json" \
+          --user ${{ secrets.USERNAME_GITEA }}:${{ secrets.PASSWORD_GITEA }} \
+          https://gitea.tryton.geeraert.eu/api/v1/repos/pi-ux-ce/${{ github.event.repository.name }}/actions/variables/PYTHON_VERSION \
+          -d "{\"Value\":\"$next_version\"}"
   Explore-Gitea-Actions:
     runs-on: ubuntu-latest
     steps:
@@ -29,7 +108,7 @@ jobs:
 
       - uses: actions/cache@v3
         with:
-          path: ~/.cache/pip
+          path: /root/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
           restore-keys: |
             ${{ runner.os }}-pip-

.gitignore

@@ -3,3 +3,4 @@
 venv/*
 *__pycache__*
 Webcal-python/*
+.idea/*

dockerfile

@@ -1,19 +1,9 @@
-FROM gitea.tryton.geeraert.eu/pi-ux-ce/python:3
+FROM gitea.tryton.geeraert.eu/pi-ux-ce/modified-python:latest
 
 ENV PYTHONUNBUFFERED 1
 
 WORKDIR /code/
 
-# Copy only the requirements file first (Changes infrequently)
-COPY requirements.txt ./
-
-
-RUN --mount=type=cache,target=/root/.cache/pip pip install --upgrade pip 
-RUN --mount=type=cache,target=/root/.cache/pip pip list --outdated
-RUN --mount=type=cache,target=/root/.cache/pip pip install --upgrade wheel
-RUN --mount=type=cache,target=/root/.cache/pip pip install --upgrade setuptools
-RUN --mount=type=cache,target=/root/.cache/pip pip install -r requirements.txt
-
 # Copy the rest of your application code (Changes frequently, invalidates subsequent cache)
 COPY . ./
 RUN python django_code/manage.py migrate