Use Docker files for Linux workflows #216

Job	Run time
Code Linting / Format / Lint	7s
macOS / Build (debug, homebrew (qt5), macos-12)	3m 12s
Windows / Build (x64, release, Qt 5.15.2, windows-2019)	2m 14s
macOS / Build (debug, homebrew (qt6), macos-12)	3m 30s
macOS / dmg (release, Qt 5.15.2, macos-11)	4m 23s
Windows / Build (x86, release, Qt 5.15.2, windows-2019)	2m 5s
macOS / dmg (release, Qt 6.5.2, macos-11)	7m 4s
Windows / Build (x64, release, Qt 6.4.3, windows-2019)	2m 38s
Linux / AppImage (release, Qt 5.15.2, ubuntu-aqtinstall-5)	2m 0s
Linux / AppImage (release, Qt 6.4.3, ubuntu-aqtinstall-6)	3m 7s
Linux / deb (release, Qt 5, ubuntu-20_04)	1m 37s
Linux / deb (release, Qt 6, ubuntu-22_04)	2m 16s
Linux / rpm (release, Qt 6, fedora)	2m 11s
Linux / snap	5m 27s
Linux / deb (release, Qt 6, ubuntu-23_10)	2m 22s
Linux / rpm (release, Qt 6, opensuse)	2m 42s
Windows / Unified x64-x86 Installer	53s
	47m 48s

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