apk-add(8)
apk add - add or update constraints to world and commit changes
apk add [<options>...] constraints...
apk add adds or updates given constraints to world (see apk-world(5)) and commit changes to disk. This usually involves installing new packages, but may also cause other changes to the installed packages.
To upgrade individual packages without modifying world use apk-fix(8).
By default apk tries to select a set of packages so that all constraints are satisfied. This means that some packages can be held back in an older version if there is direct or implicit dependencies to the older version.
apk add supports the commit options described in apk(8), as well as the following options:
--initdb Initialize a new package database.
-l, --latest Always choose the latest package by version. However, the versions considered are based on the package pinning. Primarily this overrides the default heuristic and will cause an error to displayed if all dependencies cannot be satisfied.
--no-chown Deperecated alias for --usermode.
-u, --upgrade Upgrade packages and their dependencies. Normally apk add will avoid changing installed package unless it is required by the newly added packages or their dependencies. This changes the default preference to upgrading the package to the latest installable version.
--usermode Create usermode database with --initdb. In usermode, apk will operate in such a way that root access is not required. Currently this implies: - checking that we are running as non-root - not changing file owner or group - not setting system xattrs
This implies that the installation might not be fully functional.
However, this is useful mode for testing purposes or to create
chroot where some specific applications can run as non-root.-t, --virtual NAME Create virtual package NAME with given dependencies. This new package will get the packages as dependencies instead of world. Finally the NAME is added to world. An optional version specifier for the virtual package can be given via syntax NAME=VERSION. The version defaults to synthesized version based on time.
One can use this to ensure that selected set of packages are installed,
and later the temporary modification be undone with *apk-del*(8) _NAME_
without removing packages that were installed earlier.