The purpose of the README is to provide information on how to build and run the WRF model and the WPS package using docker. It takes too long to always rebuild the container from scratch with both WRF and WPS inside (the external libraries take more than an hour to complete).
So, the solution is to first build an image with everything except for the WRF and WPS source (which takes a long time). Then, we add the WRF and WPS into the second image. The advantage is that we can generate the first image infrequently and share it on dockerhub. The second image builds quickly.
As of December 2019, this build / tag / push sequence must take place on a Linux machine. Do not build on a Mac.
This first image has the libs, data, directory structure, etc inside. The construction of this image uses the Dockerfile-first_part from this repository.
> cp Dockerfile-first_part Dockerfile
> docker build -t wrf_and_wps --build-arg argname=tutorial .
The argument argname=tutorial informs Docker as to how to build the image, specifically we need all of the WPS source and the large meteorological data and static data.
Here is the first image (wrf_and_wps).
> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
wrf_and_wps latest 157b1412b786 2 minutes ago 4.93 GB
docker.io/centos 7 b5b4d78bc90c 3 weeks ago 203 MB
Once we have that image, we want to save it. That is the WHOLE purpose of this exercise. Then we just pull it down and add in the WRF and WPS repositories, and voi-fricking-la. Note, that I am at secondtry.
> docker tag 157b1412b786 davegill/wrf_and_wps:secondtry
> docker push davegill/wrf_and_wps
The push refers to a repository [docker.io/davegill/wrf_and_wps]
980d92b51ca7: Pushed
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edf3aa290fb3: Layer already exists
secondtry: digest: sha256:957081222ba591fa84bcfa2cea7da979bfd50af3b5b79ca803cc5a8262c60b12 size: 7876
The second image is faster (it requires a much shorter time to build the image), thank you very much. This Dockerfile_wps is set up to provide a few standard branches for both WRF and WPS. Feel free to add your own instead.
> cp Dockerfile_wps Dockerfile
> docker build -t wrfwps .
We construct a container from the wrfwps image to build and run the WPS and WRF codes. Included in the container is sample test data and configuration files.
> docker run -d -t --name wrf_and_wps wrfwps