Fixing tag (#32)

Update Datafusion Ray architecture docs (#27)

* Update Datafusion Ray architecture docs

Signed-off-by: Austin Liu <austin362667@gmail.com>

* Focus on current architecture

Signed-off-by: Austin Liu <austin362667@gmail.com>

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Signed-off-by: Austin Liu <austin362667@gmail.com>

Building docker images during CI/CD and publish on tag (#29)

* build docker image

* Fixing right dockerfile version

* Publishing only on tags