Leon Klingele
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ea39bb4334
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docker: various improvements to Dockerfile
This includes the following changes:
- Use multi-stage build to run application in an optimized environment, see
https://docs.docker.com/develop/develop-images/multistage-build/
- Run application on alpine instead of archlinux to further reduce image size
- Build Crystal application with --release for improved runtime performance
- Run application as non-root user for better security, see
https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#user
- Only rebuild Docker layers when required
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2019-08-04 11:21:32 +02:00 |
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