add CI job to push cloud images to ECR #179

Job	Run time
Build and push tembo-pg-slim (14.10, 14)	39m 50s
Build and push tembo-pg-slim (15.3, 15)	40m 29s
Find directories with Dockerfiles	3s
Build and push tembo-pg-slim (16.1, 16)	42m 22s
Build and push images (./standard-cnpg, standard-cnpg)	5m 9s
Build and push images (./tembo-pg-cnpg, tembo-pg-cnpg)	2m 51s
Build and push images (./tembo-local-slim, tembo-local-slim)	1m 9s
Build and push images (./tembo-local, tembo-local)	1m 45s
Build and push images (./ml-cnpg, ml-cnpg)	19m 58s
Build and push images (./dw-cnpg, dw-cnpg)	13m 36s
	2h 47m 12s

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