multistaged build for spark_driver reduces image size #3
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I stumbled upon this repo when doing the "Big Data, Hadoop, and Spark Basics" course on edX The thing is that `RUN rm ...` doesn't help to make the images smaller cause it creates yet another layer leaving the previous one in the image I propose the following changes to the Dockerfile to make the multistage build and consequently to make the resulting image considerably smaller Note that you'll have to change the build.sh correspondingly to use the target argument `--target spark` Also note that I had to change to spark-3.1.3 since spark-3.1.2 is not available any more from apache.org I checked that the proposed changes work 1. I built the image using `docker build --target spark -t wr0ngc0degen/spark_driver .` 2. I pushed the image built with this Dockerfile to https://hub.docker.com/r/wr0ngc0degen/spark_driver (that's my identity on dockerhub) 3. I replaced the line `image: romeokienzler/spark_driver:3.1.2` --> `image: wr0ngc0degen/spark_driver` 4. I ran the "Apache Spark on Kubernetes Lab" with the updates and everything worked as expected
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I stumbled upon this repo when doing the "Big Data, Hadoop, and Spark Basics" course on edX
The thing is that
RUN rm ...doesn't help to make the images smaller cause it creates yet another layer leaving the previous one in the imageI propose the following changes to the Dockerfile to make the multistage build and consequently to make the resulting image considerably smaller
Note that you'll have to change the build.sh correspondingly to use the target argument
--target sparkAlso note that I had to change to spark-3.1.3 since spark-3.1.2 is not available any more from apache.org
I checked that the proposed changes work
docker build --target spark -t wr0ngc0degen/spark_driver .image: romeokienzler/spark_driver:3.1.2-->image: wr0ngc0degen/spark_driver