Default to unreleased docker tag

[mhofman]

Description

While reviewing #8743 we realized that the reliance on the latest docker image could be confusing, as it is actually expecting a locally built image of the sdk, not the latest released version of the sdk.

This removes some no longer used docker push logic from the deployment makefile, and uses an unreleased tag by default when building locally, which is in turn used as the image tag by the a3p integration test

Security Considerations

None

Scaling Considerations

None

Documentation Considerations

Maybe?

Testing Considerations

Relying on existing CI to catch any breakage

Upgrade Considerations

None

[gibson042]

LGTM, thanks!

[turadg]

Good thought to use unreleased instead of local, as there can be local builds of released versions.

And thanks for the related cleanup

[mhofman]

Good thought to use unreleased instead of local, as there can be local builds of released versions.

Credit goes to @michaelfig who suggested it!