Improved docker-compose.yml and own Dockerfile

[minyk]

Hi @tleyden First of all, this is what I need! Thank you!

After some hours with docker-compose up and down, I think I improve some part of the docker-compose.yml. See my branch: https://github.com/minyk/open-ocr/tree/feature/docker-compose/docker-compose and major changes are here:

Add own open-ocr/Dockerfile and open-ocr-preprossor/Dockerfile for local build.

• Update container OS to Ubuntu 16.04 LTS.
• Using mirror://mirror.ubuntu.com for apt.
• Layer build command of Dockerfile carefully for reusability.
• Comment out unnecessary languages from open-ocr/Dockerfile ’s language section(all languages are enabled by default).
• open-ocr-preprocessor is based on open-ocr image. Save some disk space.

Modify docker-compose.yml.

• Remove tcp port mapping of rabbitmq service: depends_on or link is enough for.
• Add healthcheck for rabbitmq service. No more connection refused error.
• Reorder container startup. This is needed to build open-ocr:build image before open-ocr-preprossor:build.
• All scripts directories are mounted with read only mode.

How about these changes? If you may accept, I will send PR for these.

Thank you again for great works!

[tleyden]

These sound like good changes! Can you rebase your branch on the current master and send a PR? Somehow your branch was based on an older version of master (14 commits behind)