Added new Ubuntu 26.04 LTS to CI

.github/workflows/OCV-PR-Linux.yaml

@@ -48,18 +48,25 @@ jobs:
     strategy:
       # NOTE: Debugging
       # fail-fast: true
-      # max-parallel: 3
       fail-fast: false
-      max-parallel: 3
+      max-parallel: 4
       matrix:
         version:
+          - '26.04'
           - '24.04'
           - '22.04'
           - '20.04'
           # TODO: enable later
           # - '24.04_asan'
         branch: ${{ fromJSON(needs.branch_eval.outputs.branches )}}
         include:
+          - version: '26.04'
+            image: '26.04:20260425'
+            jpegxl: true
+            avif: true
+            avx2: true
+            gphoto2: true
+            aravis: true
           - version: '24.04'
             image: '24.04:20251127'
             jpegxl: true
@@ -117,7 +124,7 @@ jobs:
         ${{ matrix.plugins && '-DVIDEOIO_PLUGIN_LIST=all -DHIGHGUI_PLUGIN_LIST=all' }}
         ${{ matrix.limited_api && '-DPYTHON3_LIMITED_API=ON' }}
         ${{ matrix.asan && '-DENABLE_OMIT_FRAME_POINTER=OFF -DCMAKE_CXX_FLAGS="-fsanitize=address"' }}
-      HOME: ${{ contains(matrix.image, '24.04') && '/home/ubuntu' || '/home/ci' }}
+      HOME: ${{ ( contains(matrix.image, '24.04') || contains(matrix.image, '26.04') ) && '/home/ubuntu' || '/home/ci' }}
       MAIN_BUILD_DIR: "${{ (github.event.repository.name != 'opencv_contrib') && 'build' || 'build-contrib' }}"
       # NOTE: CN config
       OPENCV_FOR_THREADS_NUM: 8

docker/ubuntu/Dockerfile-26

@@ -0,0 +1,95 @@
+# Version: 20260425
+# Image name: quay.io/opencv-ci/opencv-ubuntu-26.04
+
+FROM ubuntu:26.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN \
+  apt-get update && \
+  apt-get install -y --no-install-recommends \
+    software-properties-common \
+    curl \
+    zip \
+    unzip \
+    wget \
+    rsync \
+    mc \
+    nano \
+    time \
+    git \
+    file
+
+RUN \
+  apt-get update && \
+  apt-get install -y --no-install-recommends \
+    cmake \
+    build-essential \
+    ccache \
+    ninja-build \
+    ant \
+    ant-optional \
+    default-jdk \
+    python3-dev \
+    python3-setuptools \
+    python3-pip \
+    zlib1g-dev \
+    libjpeg-dev \
+    libpng-dev \
+    libtiff5-dev \
+    libopenjp2-7-dev \
+    libavif-dev \
+    libjxl-dev \
+    libopenexr-dev \
+    libgtk-3-dev \
+    libgtk-4-dev \
+    libcamera-dev \
+    libavcodec-dev \
+    libavformat-dev \
+    libswscale-dev \
+    libavdevice-dev \
+    libgstreamer1.0-dev \
+    libgstreamer-plugins-base1.0-dev \
+    gstreamer1.0-plugins-good \
+    gstreamer1.0-plugins-ugly \
+    gstreamer1.0-libav \
+    libopenni2-dev \
+    libaravis-dev \
+    libdc1394-dev \
+    libgphoto2-dev \
+    hdf5-tools \
+    libleptonica6 \
+    libhdf5-dev \
+    libgdal-dev \
+    libgoogle-glog-dev \
+    libarmadillo-dev \
+    libeigen3-dev \
+    libsuitesparse-dev \
+    liblapacke-dev \
+    libopenblas-dev \
+    libeigen3-dev \
+    libglfw3-dev \
+    libceres-dev \
+    lcov \
+    xvfb \
+    pkg-config
+
+RUN python3 -m pip install --break-system-packages \
+    numpy \
+    pylint \
+    requests \
+    cairosvg && \
+    pip cache purge
+
+# Self-hosted runner UID is 1000
+
+USER ubuntu
+
+RUN \
+  mkdir $HOME/opencv $HOME/opencv_contrib $HOME/build && \
+  git config --global --add safe.directory "*" && \
+  git config --global user.email "opencv.ci" && \
+  git config --global user.name "opencv.ci" && \
+  git config --global pull.rebase false
+
+CMD bash