doc: add dev install page.

docs/development/install.md

@@ -0,0 +1,55 @@
+---
+title: Installation
+---
+
+## Development Install
+
+!!! warning
+
+    Do **not** install this project *"manually"* (with `make`, `sudo make install`). The distribution specific packages are intended to be used in development as they include additional rule to ensure compatibility with upstream. 
+
+    See `debian/`, `PKGBUILD` and `dists/apparmor.d.spec`.
+
+
+**:material-docker: Docker**
+
+From any distribution, if you have docker installed, you can simply build the package with:
+```sh
+make package dist=<distribution>
+```
+Then you can install the package with `dpkg`, `pacman` or `rpm`.
+
+**:material-arch: Archlinux**
+```sh
+make pkg
+```
+
+**:material-ubuntu: Ubuntu & :material-debian: Debian**
+```sh
+make dpkg
+```
+
+**:simple-suse: OpenSUSE**
+```sh
+make rpm
+```
+
+
+## Profile flags
+
+Flags for all profiles in this project are tracked under the [`dists/flags`](https://github.com/roddhjav/apparmor.d/tree/main/dists/flags) directory. It is used for profile that are not considered stable. Files in this directory should respect the following format: `<profile> <flags>`, flags should be comma separated.
+
+For instance, to move `adb` in complain mode, edit **[`dists/flags/main.flags`](https://github.com/roddhjav/apparmor.d/blob/main/dists/flags/main.flags)** and add the following line:
+```sh
+adb complain
+```
+
+Beware, flags defined in this file overwrite flags in the profile. So you may need to add other flags. Example for `gnome-shell`:
+```sh
+gnome-shell attach_disconnected,mediate_deleted,complain
+```
+
+
+## Ignore profiles
+
+It can be handy to not install a profile for a given distribution. Profile or directory to ignore are tracked under the [`dists/ignore`](https://github.com/roddhjav/apparmor.d/tree/main/dists/ignore) directory. Files in this directory should respect the following format: `<profile or path>`. One ignore by line. It can be a profile name or a directory to ignore (relative to the project root).

mkdocs.yml

@@ -140,6 +140,7 @@ nav:
   - Development:
     - development/index.md
     - Architecture:
+      - development/install.md
       - development/guidelines.md
       - development/structure.md
     - Tests: