In Alpine Linux, you can install man pages for packages using the apk package manager. To install the man pages for a specific package, you can use the following command:
$ apk add <package_name>-doc
Replace <package_name> with the name of the package for which you want to install the man pages.
For example, to install the man pages for the openssl package, you would use the following command:
$ apk add openssl-doc
Once the man pages have been installed, you can access them by using the man command. For example, to view the man page for the openssl command, you would run:
$ man openssl