Add version and optimised build flags for docker images as well (#286) #480

Job	Run time
Build and (conditionally) push Docker images (cli, alpine)	37s
Build and (conditionally) push Docker images (cli, alpine)	33s
Build and (conditionally) push Docker images (cli, debian)	25s
Build and (conditionally) push Docker images (cli, debian)	33s
Build and (conditionally) push Docker images (scan, alpine)	23s
Build and (conditionally) push Docker images (scan, alpine)	32s
Build and (conditionally) push Docker images (scan, debian)	28s
Build and (conditionally) push Docker images (scan, debian)	31s
Build and (conditionally) push Docker images (resolution, alpine)	25s
Build and (conditionally) push Docker images (resolution, alpine)	34s
Build and (conditionally) push Docker images (resolution, debian)	28s
Build and (conditionally) push Docker images (resolution, debian)	32s
	6m 1s

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