Reduce Docker image size #3
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Each RUN command in Dockerfile creates a new layer in the filesystem. As a result, the image size increases. This pull request reduces Docker image size from around 1.07GB to 618MB by combining all RUN commands together.
https://docs.docker.com/develop/develop-images/dockerfile_best-practices/
https://forums.docker.com/t/how-to-reduce-docker-image-sizes/37274