add alpine package

technology/applications/package managers/Alpine Package.md

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+---
+obj: concept
+source: https://wiki.alpinelinux.org/wiki/Creating_an_Alpine_package
+---
+
+# Alpine Package
+Alpine Packages are packages for [Alpine Linux](../../linux/Alpine%20Linux.md) and installable via [apk](apk.md).
+
+## Setup
+The alpine-sdk is a metapackage that pulls in the most essential packages used to build new packages. Also install and configure a way to elevate privileges, such as sudo or [doas](../cli/doas.md), and an editor, such as vi, nano, [micro](../cli/micro.md).
+```shell
+apk add alpine-sdk
+addgroup user abuild
+```
+
+Generate a key for package creation:
+```shell
+abuild-keygen -a -i
+```
+
+## Build
+For you build you need a [APKBUILD](APKBUILD.md) file and `abuild` as a packaging tool.
+
+Usage:
+- `abuild checksum`: updates the checksums for source files.
+- `abuild -r`: builds the package.
+
+### Building in a chroot
+Install package `abuild-rootbld`:
+```shell
+apk add abuild-rootbld
+```
+
+You may now build your packages from source in an unprivileged sandbox based on bubblewrap with the command:
+```shell
+abuild rootbld
+```
+
+If the build process needs network access there has to bet set the **net** option in [APKBUILD](APKBUILD.md).
+
+## Bumping a package version
+The tool `abump` is a utility to bump pkgver in [APKBUILD](APKBUILD.md) files if the package gets an update to a newer upstream release. `abump` will update the package's `pkgver`, rebuild it and create a new commit with the resulting changes.
+```shell
+abump [-hR]
+```
+
+**abump options**
+- **-h** Show this help
+- **-R** Run abuild with -R for recursive building
+- **-k** Keep existing packages
+
+## Updating a package release
+If you want to bump or reset the pkgrel value of your [APKBUILD](APKBUILD.md) or test your [APKBUILD](APKBUILD.md) files, apkgrel can assist you.
+```shell
+apkgrel -a|-h|-s NUM|-t|-z [-f] FILE...
+```
+
+**apkgrel options**
+- **-a** Add 1 to current pkgrel
+- **-f** Force, even if given files are not in proper format
+- **-h** Show this help
+- **-s** Set pkgrel to NUM
+- **-t** Only verify that files are in proper format
+- **-z** Set pkgrel to 0