Merge pull request #252 from jpopelka/packit-install

Howto install on RHEL/CentOS or run in a container

Fixes packit/packit#278
Fixes packit/packit#762

Reviewed-by: Tomas Tomecek <tomas@tomecek.net>

content/docs/guide.md

@@ -27,14 +27,20 @@ the logic is baked inside the `packit` command - so once `packit srpm` (the comm
 to create a source RPM locally from the current snapshot of the project) starts
 passing for you, it should work inside packit service as well.
 
-This is how you can install packit if you are on Fedora Linux:
+### Fedora Linux
 
     $ sudo dnf install packit
 
-We publish packit to PyPI and it's available as `packitos` project — **packit
-at PyPI is something different**.
+### Red Hat Enterprise Linux or CentOS Stream 8
 
-    $ pip3 install --user packitos
+On RHEL/CentOS 8 you can install RPM from [EPEL](https://fedoraproject.org/wiki/EPEL) repository.
+On CentOS, some dependencies are in PowerTools repository, so you have to enable it:
+
+    $ sudo dnf install dnf-plugins-core epel-release
+    $ sudo dnf config-manager --set-enabled powertools
+    $ sudo dnf install packit
+
+### Via Fedora COPR
 
 You can also help us test the latest development snapshot by installing packit
 built from the master branch in Copr:
@@ -44,9 +50,28 @@ built from the master branch in Copr:
     $ # OR in case you have packit already installed from the Fedora repositories:
     $ sudo dnf upgrade packit
 
+### From PyPI
+
+We publish packit to PyPI and it's available as `packitos` project — **packit
+at PyPI is something different**.
+
+    $ pip install --user packitos
+
+### From Source
+
 ... or installing it directly from GitHub:
 
-    $ pip3 install --user git+https://github.com/packit/packit
+    $ pip install --user git+https://github.com/packit/packit
+
+### In a container
+
+If none of the above work for you, try running it in a container
+from our Fedora based image. It contains packit installed from `main` branch,
+i.e. the same you'd get by pip installing from Github.
+
+    $ podman run -ti --rm -v $PWD:/src --security-opt label=disable quay.io/packit/packit bash
+    $ packit
+    Usage: packit [OPTIONS] COMMAND [ARGS]...
 
 ## RPM builds pass on your laptop.