Add a shim providing group(docker)

in order to enable running act-runner with non-rootless docker-ce
Swap preference of docker to the fedora provided moby-engine from docker-ce (which is sometimes ahead of the fedora version)

.gitignore

@@ -25,3 +25,5 @@ go.work
 .idea/
 
 RPMS/
+
+BUILD/

gitea-act-runner.spec

@@ -1,5 +1,6 @@
 %global dockerd                     dockerd
 %global rootless                    rootless
+%global shim                        docker-group-shim
 %global dockerd_rootless            %{dockerd}-%{rootless}
 %global dockerd_rootless_service    %{dockerd}-%{rootless}-user.service
 %global runner_bin                  act_runner
@@ -12,7 +13,8 @@
 %global goipath         gitea.com/gitea/act_runner
 
 %global common_description %{expand:
-A runner for Gitea based on nectos/act.}
+A runner for Gitea based on nectos/act.
+}
 
 %global major 0
 %global minor 6
@@ -76,6 +78,20 @@ fi
 
 # #############################################################
 
+# #############################################################
+# docker-ce docker group dependency provider shim package
+%package %{shim}
+Summary: Provide the group(docker) requirement when using non-rootless docker-ce
+
+Provides: group(docker)
+Requires: docker-ce
+
+%description %{shim}
+The %{name}-%{dockerd} package uses sysusers.d to manage users and group
+memberships. The user needs to be a member of the docker groupm that is
+created by docker-ce or moby-engine. Moby engine provides a group(docker),
+but docker-ce doesn't, so this shim provides that requirement to enable
+using the act-runner with the non-rootless docker-ce.
 
 # #############################################################
 # act_runner with rootless dockerd package
@@ -169,5 +185,7 @@ install -D -m 0755 -vp %{SOURCE6} %{buildroot}%{_datadir}/%{name}/rootless-act_r
 %{_userunitdir}/%{dockerd_rootless_service}
 %{_datadir}/%{name}/rootless-act_runner-register.sh
 
+%files %{shim}
+
 %changelog
 %autochangelog