client: remove unused Docker images and containers on startup #4996

Job	Run time
libs-build	1m 41s
client-build	2m 34s
apps-build	2m 21s
libs-vcpkg-build	2m 15s
client-vcpkg-build	2m 59s
apps-vcpkg-build	3m 21s
libs-cmake-build	1m 48s
libs-arm64-build	1m 55s
apps-arm64-build	7m 35s
manager-with-webview-vcpkg-build	9m 6s
server-build	4m 8s
manager-with-webview-build	5m 49s
manager-without-webview-build	5m 50s
unit-test-build	3m 30s
integration-test-build	4m 53s
apps-build-release	1m 40s
apps-x86-build-release	1m 43s
apps-arm64-build-release	6m 43s
	1h 9m 51s

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