[GitHub] chetanmeh opened a new pull request #3082: Add dockerignore files to reduce size of build context

[GitBox <gi...@apache.org>]

chetanmeh opened a new pull request #3082: Add dockerignore files to reduce size of build context
URL: https://github.com/apache/incubator-openwhisk/pull/3082
 
 
   Adds .dockerignore files to 3 docker images which also have scala code. This ensures that build context send to docker daemon only includes required files.
   
   This is based on recommended docker best practice of [using a .dockerignore file][1]. 
   
   Below are the size of build context send prior and post change
    
   - common:scala
   
           Sending build context to Docker daemon  30.32MB //current
           Sending build context to Docker daemon  6.144kB  //post change
   - :core:controller
   
           Sending build context to Docker daemon  65.54MB //current
           Sending build context to Docker daemon  48.74MB //post change
   - :core:invoker
   
           Sending build context to Docker daemon  49.87MB //current
           Sending build context to Docker daemon  45.46MB //post change
   
   This leads to decent saving for common for now. Going forward once Maven artifacts are also build (#3060) then it would ensure that build context does not increase
       
   [1]: https://docs.docker.com/engine/userguide/eng-image/dockerfile_best-practices/#use-a-dockerignore-file

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