CI Linux: switch to ubuntu-22.04

ubuntu-20.04 GH image is being deprecated and will be eventually removed
from GH

Author: MartinPulec

.github/scripts/Linux/prepare.sh

@@ -44,6 +44,14 @@ sudo apt install uuid-dev # Cineform
         sudo apt install gcc-10 g++-10
         sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 10
         sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 10
+
+        # FFmpeg deps
+        for i in $(seq 10); do
+                [ "$i" -gt 1 ] && sleep $((2**i))
+                # openh264, new x265
+                sudo add-apt-repository --yes ppa:savoury1/ffmpeg4 && err=0 && break || err=$?
+        done
+        (exit "$err")
 )
 
 get_build_deps_excl() { # $2 - pattern to exclude; separate packates with '\|' (BRE alternation)
@@ -55,13 +63,6 @@ sdl2_ttf_build_dep=$(get_build_deps_excl libsdl2-ttf libsdl2-dev)
 # shellcheck disable=SC2086 # intentional
 sudo apt install $sdl2_mix_build_dep $sdl2_ttf_build_dep
 
-# FFmpeg deps
-for i in $(seq 10); do
-        [ "$i" -gt 1 ] && sleep $((2**i))
-        # openh264, new x265
-        sudo add-apt-repository --yes ppa:savoury1/ffmpeg4 && err=0 && break || err=$?
-done
-(exit "$err")
 # for FFmpeg - libzmq3-dev needs to be ignored (cannot be installed, see run #380)
 ffmpeg_build_dep=$(get_build_deps_excl ffmpeg 'libva-dev')
 # shellcheck disable=SC2086 # intentional

.github/scripts/Linux/utils/Dockerfile.ubuntu

@@ -1,4 +1,4 @@
 # inspired by https://github.com/aferrero2707/appimage-testsuite
 # installing libraries included in https://raw.githubusercontent.com/probonopd/AppImages/master/excludelist
-FROM ubuntu:20.04
+FROM ubuntu:22.04
 RUN apt-get update && apt-get install -y libasound2 libegl1-mesa libfontconfig1 libgl1-mesa-glx libgmp10 libharfbuzz0b libp11-kit0 libx11-6 xvfb

.github/workflows/ccpp.yml

@@ -51,7 +51,7 @@ jobs:
   Ubuntu:
     name: run Ubuntu
     needs: prepare
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       appimage_key: ${{ secrets.appimage_key }}
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -97,7 +97,7 @@ jobs:
     - name: make distcheck
       run: make distcheck
     - name: check libc/libstdc++ ABI
-      run: .github/scripts/Linux/check_abi.sh 2.31 3.4.28 1.3.12 bin/* lib/ultragrid/*
+      run: .github/scripts/Linux/check_abi.sh 2.35 3.4.30 1.3.13 bin/* lib/ultragrid/*
     - name: Create AppImage
       run: data/scripts/Linux-AppImage/create-appimage.sh https://github.com/$GITHUB_REPOSITORY/releases/download/continuous/UltraGrid-$CHANNEL-x86_64.AppImage.zsync
     - name: Check AppImage