Merge

chore(ci): drop Dockerfile pins (#2016) #743

Job	Run time
Initialize	6s
TEST Deploys (2016) / Deploy (init)	20s
TEST Deploys (2016) / Deploy (frontend)	34s
TEST Deploys (2016) / Deploy (oracle-api)	2m 0s
TEST Deploys (2016) / Deploy (backend)	46s
PROD Deploys (2016) / Deploy (init)	18s
PROD Deploys (2016) / Deploy (frontend)	28s
PROD Deploys (2016) / Deploy (backend)	45s
PROD Deploys (2016) / Deploy (oracle-api)	1m 37s
Promote Images (frontend)	4s
Promote Images (backend)	5s
Promote Images (oracle-api)	5s
	7m 8s

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