Update after_install.sh to remove Docker network for previous deployment

[hancush]

Docker networks can build up and prevent the creation of additional containers. Let's update our deploy script, which stops and removes the previous Solr container, to also remove the associated Docker network.

https://github.com/Metro-Records/la-metro-councilmatic/blob/8848bfb42e26881a8c525aca393d14e828aea49e/scripts/app_start.sh#L66-L73

[antidipyramid]

@hancush It looks like the change isn't working.

I think what's going on is that the we're trying to remove the network named for the current deployment before the network has been created.

What about running docker network prune --force to remove the unused networks from the previous deployment(s)?

[hancush]

@antidipyramid My thoughts exactly:

https://github.com/Metro-Records/la-metro-councilmatic/commit/5eaa4d11650d5a0780c9cdf75e2b6aaf709e2433#diff-bdee41882d216002080badfff2d6a1305bb902f2431714a9a6d75442953433c0R72

[hancush]

Done and deployed.