Fix deploy images

[Kuniwak]

Built images missing from docker push.

NOTE: Previously, we used to separate the processes into "build-image" and "push-image." We did this because, when building and pushing multiple images, the sequence:

1. build A
2. build B
3. build C
4. push A
5. push B
6. push C

ensures that if the build of B or C fails, A is not pushed. However, with the sequence:

1. build A
2. push A
3. build B
4. push B
5. build C
6. push C

A ends up being pushed regardless.

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