Use docker image for CI

.gitea/workflows/tests.yml

@@ -12,6 +12,8 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    container:
+      image: gitea.tourolle.paris/dtourolle/pyphotoalbum-ci:latest
     strategy:
       matrix:
         python-version: ['3.11', '3.12', '3.13', '3.14']
@@ -25,16 +27,11 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
-    - name: Install system dependencies
-      run: |
-        sudo apt-get update -qq
-        sudo apt-get install -y libgl1 libglib2.0-0
-
     - name: Install Python dependencies
       run: |
         python -m pip install --upgrade pip
         pip install -e ".[dev]"
-        pip install coverage-badge interrogate
+        pip install setuptools coverage-badge interrogate
 
     - name: Download initial failed badges
       run: |

Dockerfile.ci

@@ -0,0 +1,43 @@
+# CI test image for pyPhotoAlbum
+# Build: docker build -f Dockerfile.ci -t gitea.tourolle.paris/dtourolle/pyphotoalbum-ci:latest .
+# Push:  docker push gitea.tourolle.paris/dtourolle/pyphotoalbum-ci:latest
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y \
+    # Python
+    python3 \
+    python3-venv \
+    python3-pip \
+    # PyQt6 / OpenGL runtime deps
+    libgl1 \
+    libglib2.0-0 \
+    libegl1 \
+    libfontconfig1 \
+    libfreetype6 \
+    libdbus-1-3 \
+    # XCB / display (needed even with offscreen platform)
+    libx11-6 \
+    libx11-xcb1 \
+    libxcb1 \
+    libxcb-cursor0 \
+    libxcb-glx0 \
+    libxcb-icccm4 \
+    libxcb-image0 \
+    libxcb-keysyms1 \
+    libxcb-randr0 \
+    libxcb-render0 \
+    libxcb-render-util0 \
+    libxcb-shape0 \
+    libxcb-shm0 \
+    libxcb-sync1 \
+    libxcb-xfixes0 \
+    libxcb-xinerama0 \
+    libxcb-xkb1 \
+    libxkbcommon0 \
+    libxkbcommon-x11-0 \
+    # Misc tools used in workflows
+    curl \
+    git \
+    && rm -rf /var/lib/apt/lists/*