Project status: alpha.

Spark image built with official instructions presents several problems:

• Does not support s3a:// urls for application and dependency jars. Application has to build custom Docker image to bundle application jar.
• Built with Scala 2.11, rather than 2.12. Although Spark officially provides Scala 2.12 version of distribution, it doesn't include Hadoop dependencies.

This image addresses these issues.

1. Download and extract Hadoop binary distribution (any version above 2.8) into build/ directory. Rename it as hadoop.

2. Download and extract Spark binary distribution (without pre-packaged Hadoop dependencies) into build/ directory. Rename it as spark.

3. Build Spark image:

   docker build -t <tag> -f Dockerfile .