install_solution_packs.sh step missing from documentation

[bseeger]

Issue description

The documentation for installing a staging/production site (both new and migrate scenarios) is missing one critical step.

If one doesn't run the install_solution_packs.sh script found in the ISLE repository (under scripts/apache), the information fedora needs will not be in fedora and you'll see an error.

To run the script, first copy it into the apache container:
$ docker cp install_solution_packs.sh isle-apache-ld:.
(notice the ending . in the above command)
Log into the container:
$ docker exec -it isle-apache-ld bash
Now you are in the container - fix permissions on the script and then run it:
root@bcad96baae71:/# chmod +x install_solution_packs.sh
root@bcad96baae71:/# ./install_solution_packs.sh

Once that's finished running, things should function well again.

For an issue, describe steps to reproduce the issue

System setup (OS information, software versions, etc):

Steps:

1. Install a local ISLE site
2. Follow documentation to install a new Staging site based on local site.
3. At the end the repository page will not load as the collections will not be in fedora. You will see a fedora error in the logs that looks like this:
   (BaseRestResource) Resource not found: Object not found in low-level storage: islandora:root; unable to fulfill REST API request

Once you run the install script as described above, the issue goes away.

What's the expected result?

• That there is no error upon logging into the drupal site and looking at the Islandora Repository

What's the actual result?

• An error about the base root not being present