Bump base of Docker images and bcrypt (#1010) #3332

Job	Run time
Build backend e2e test image	56s
Lint mwdb-core web sources	44s
Build frontend e2e test image	42s
Build frontend unit test image	1m 5s
lint_core	12s
Build mwdb-core core image	1m 50s
Build mwdb-core web image	1m 0s
Perform frontend unit tests	34s
Perform frontend e2e tests	1m 51s
Perform backend e2e tests	2m 37s
Push test images on Docker Hub	1m 36s
Push images on Docker Hub	3m 59s
	17m 6s

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