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Once inside the <openifs-docker-build-dir>  clone or branch from the git repository with download the OpenIFS release package, e.g.

git clone --single-branch --branch release sshwget https://git@gitsites.ecmwf.int/oifs/openifs/openifs-data/src/48r1/openifs-48r1.1.git.tar.gz
tar -xvzf openifs-48r1.tar.gz

Further, if the SCM is required, then also download the SCM package to <openifs-docker-build-dir>

wget https://sites.ecmwf.int/openifs/openifs-data/scm/48r1/scm_openifs_48r1.1.tar.gz
tar -xzvf scm_openifs_48r1.1.tar.gz

Once OpenIFS 48r1 has been extracted to your your <openifs-docker-build-dir> ,  then copy the Dockerfile from the release to <openifs-docker-build-dir> 

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This cp step is important because the Dockerfile  and the OpenIFS release and SCM package, i.e., openifs-48r1.1 and scm_openifs, need to be in the same directory to build the container (see the openifs-48r1.1/scripts/docker/gcc-docker-48r1.1/Dockerfile)

Build the OpenIFS docker image

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