message: add ARM64 workflow for 4.x
  add opencv_contrib fork check
  use image hosted on quay.io
diff: name: PR:4.x ARM64
  -# TODO: enable pipeline after 4.x update
  -on: workflow_dispatch
  +on:
  + pull_request:
  + branches:
  + - 4.x
  env:
  EXTRA_CMAKE_OPTIONS: '-DBUILD_DOCS=ON -DPYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 -DBUILD_opencv_xfeatures2d=OFF -DBUILD_EXAMPLES=ON -DOPENCV_ENABLE_NONFREE=ON -DENABLE_CCACHE=OFF'
  @@ -21,7 +23,7 @@ jobs:
  run:
  shell: bash
  container:
  - image: docker.io/yuentau/ocv_ubuntu:20.04-arm64
  + image: quay.io/opencv-ci/opencv-ubuntu:20.04-arm64
  steps:
  - name: PR info
  run: |
  @@ -87,18 +89,12 @@ jobs:
  run: cd /opencv-build && xvfb-run -a bin/opencv_test_objdetect --gtest_filter="-Objdetect_QRCode_Close.regression/0:Objdetect_QRCode_Close.regression/4"
  - name: Accuracy:photo
  run: cd /opencv-build && xvfb-run -a bin/opencv_test_photo --gtest_filter="-Photo_CalibrateDebevec.regression"
  - - name: Accuracy:shape
  - run: cd /opencv-build && xvfb-run -a bin/opencv_test_shape
  - name: Accuracy:stitching
  run: cd /opencv-build && xvfb-run -a bin/opencv_test_stitching
  - - name: Accuracy:superres
  - run: cd /opencv-build && xvfb-run -a bin/opencv_test_superres
  - name: Accuracy:video
  run: cd /opencv-build && xvfb-run -a bin/opencv_test_video
  - name: Accuracy:videoio
  run: cd /opencv-build && xvfb-run -a bin/opencv_test_videoio
  - - name: Accuracy:videostab
  - run: cd /opencv-build && xvfb-run -a bin/opencv_test_videostab
  - name: Performance:calib3d
  run: cd /opencv-build && xvfb-run -a bin/opencv_perf_calib3d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
  - name: Performance:core
  @@ -117,8 +113,6 @@ jobs:
  run: cd /opencv-build && xvfb-run -a bin/opencv_perf_photo --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
  - name: Performance:stitching
  run: cd /opencv-build && xvfb-run -a bin/opencv_perf_stitching --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
  - - name: Performance:superres
  - run: cd /opencv-build && xvfb-run -a bin/opencv_perf_superres --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
  - name: Performance:video
  run: cd /opencv-build && xvfb-run -a bin/opencv_perf_video --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
  - name: Performance:videoio
  