Migrate to docker v2 #362

Job	Run time
3.7 CH=24.1.8.22	1m 1s
3.7 CH=23.8.4.69	1m 0s
3.7 CH=22.5.1.2079	1m 3s
3.7 CH=19.3.5	1m 0s
3.7 CH=18.14.9	52s
3.8 CH=24.1.8.22	35s
3.8 CH=23.8.4.69	33s
3.8 CH=22.5.1.2079	38s
3.8 CH=19.3.5	31s
3.8 CH=18.14.9	31s
3.9 CH=24.1.8.22	44s
3.9 CH=23.8.4.69	44s
3.9 CH=22.5.1.2079	33s
3.9 CH=19.3.5	40s
3.9 CH=18.14.9	34s
3.10 CH=24.1.8.22	36s
3.10 CH=23.8.4.69	38s
3.10 CH=22.5.1.2079	45s
3.10 CH=19.3.5	31s
3.10 CH=18.14.9	35s
3.11 CH=24.1.8.22	35s
3.11 CH=23.8.4.69	34s
3.11 CH=22.5.1.2079	33s
3.11 CH=19.3.5	29s
3.11 CH=18.14.9	32s
3.12 CH=24.1.8.22	58s
3.12 CH=23.8.4.69	1m 16s
3.12 CH=22.5.1.2079	57s
3.12 CH=19.3.5	50s
3.12 CH=18.14.9	49s
Indicate completion to coveralls.io	4s
	21m 41s

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