fix(nginx): manually install libssl
fix(nginx): manually install libssl

Some of the previous commands ended up over-zelous and removed libssl, which
prevented nginx from starting. This reinstates libssl by adding it as a manual
install so it won't be autoremoved.

DCO 1.1 Signed-off-by: Patrick Wagstrom <patrick@wagstrom.net>

pridkett/webpage-docker-containers