Update Dockerfile (GPU Support, Workdir, Permissions) #2493

Job	Run time
test-detect-text (ubuntu-latest, 3.8, tensorflow)	1m 34s
test-evaluate (ubuntu-latest, 3.8, tensorflow)	5m 26s
test-detect-text (ubuntu-latest, 3.8, pytorch)	3m 42s
test-analyze (ubuntu-latest, 3.8, tensorflow)	1m 30s
test-evaluate (ubuntu-latest, 3.8, pytorch)	6m 20s
test-collectenv (ubuntu-latest, 3.8)	8s
test-detect-text (ubuntu-latest, 3.9, tensorflow)	1m 29s
test-analyze (ubuntu-latest, 3.8, pytorch)	3m 40s
test-evaluate (ubuntu-latest, 3.9, tensorflow)	5m 26s
test-collectenv (ubuntu-latest, 3.9)	9s
test-detect-text (ubuntu-latest, 3.9, pytorch)	2m 54s
test-analyze (ubuntu-latest, 3.9, tensorflow)	1m 31s
test-evaluate (ubuntu-latest, 3.9, pytorch)	6m 4s
test-analyze (ubuntu-latest, 3.9, pytorch)	3m 57s
test-collectenv (macos-latest, 3.8)	16s
test-collectenv (macos-latest, 3.9)	12s
test-collectenv (windows-latest, 3.8)	18s
test-collectenv (windows-latest, 3.9)	18s
	44m 54s

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