Include:Using Internet Repositories for apk-tools

Edit the /etc/apk/repositories file using any editor of your choice (nano for instance) and if necessary, add references to the Alpine Linux package repositories. In the example below, the file references the Alpine Linux CD, so that if a requested package is available on the local media, it will be obtained from there instead of being downloaded from the remote repository:

Contents of /etc/apk/repositories

/media/cdrom/apks http://dl-3.alpinelinux.org/alpine/v3.19/main http://dl-3.alpinelinux.org/alpine/v3.19/community

In this example, To upgrade Alpine Linux from version 3.19 to 3.20, simply replace the version number 3.19 by 3.20 in all the places.So that the file will look like this:

Contents of /etc/apk/repositories

/media/cdrom/apks http://dl-3.alpinelinux.org/alpine/v3.20/main http://dl-3.alpinelinux.org/alpine/v3.20/community

Updating package lists

With the correct repositories file in place, the latest index list of available packages can be obtained with:

apk update

Tip: Adding the --update-cache or -U to another apk command, as in apk add -U ... or apk upgrade -U, has the same effect as always running apk update immediately before the other apk command. Instead of auto-update it only if the index has not been updated recently.