How to configure local git server

Using a local git server we can deploy ocm applications without network
access to github. This is useful for demos when the network is
unreliable, for example in a conference.

Signed-off-by: Nir Soffer <[email protected]>

test/gitlap/README.md

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+# Setting up a local git server
+
+## Initial setup
+
+1. Install lighttpd
+
+   ```
+   sudo dnf install lighttpd
+   ```
+
+1. Create the git repo
+
+   Create a directory where the git repositories will be served:
+
+   ```
+   sudo mkdir /var/www/gitlap
+   cd /var/www/gitlap
+   sudo git clone --bare https://github.com/nirs/ocm-kubevirt-samples.git
+   ```
+
+   Set git repo permissions so you can push changes, and the web server
+   can serve the repo.
+
+   ```
+   sudo chown -R $USER:lighttpd /var/www/gitlap
+   ```
+
+1. Copy the vhost configuration
+
+   ```
+   sudo cp gitlap.conf /etc/lighttpd/vhosts.d/
+   ```
+
+1. Uncomment the vhost include in /etc/lighttpd/lighttpd.conf
+
+   ```
+   include conf_dir + "/vhosts.d/*.conf"
+   ```
+
+1. Enable and start the service
+
+   ```
+   sudo systemctl enable --now lighttpd
+   ```
+
+1. Allow http access in the libvirt zone
+
+   ```
+   sudo firewall-cmd --zone=libvirt --add-service=http --permanent
+   sudo firewall-cmd --reload
+   ```
+
+## Testing the server
+
+1. Add entry in /etc/hosts for testing locally
+
+   ```
+   192.168.122.1    host.minikube.internal
+   ```
+
+1. Check that git clone works
+
+   ```
+   git clone http://host.minikube.internal/ocm-kubevirt-samples.git
+   rm -rf ocm-kubevirt-samples
+   ```
+
+1. Check git clone in a minikube cluster
+
+   ```
+   minikube ssh -p dr1
+   git clone http://host.minikube.internal/ocm-kubevirt-samples.git
+   rm -rf ocm-kubevirt-samples
+   ```
+
+## Updating the git repo
+
+1. Add a remote to your working repo
+
+   ```
+   git remote add gitlap file:///var/www/gitlap/ocm-kubevirt-samples.git
+   ```
+
+1. Push changes to the remote
+
+   ```
+   git push -f gitlap main
+   ```

test/gitlap/gitlap.conf

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+# Minimal configuration for local git server for minikube clusters.
+#
+# For more options see:
+# https://redmine.lighttpd.net/projects/lighttpd/wiki/How_to_set_up_a_git_server_over_http(s)
+
+server.modules += ("mod_setenv", "mod_cgi", "mod_alias")
+
+# `host.minikube.internal` is a special DNS name injected by minikube to all clusters.
+# https://minikube.sigs.k8s.io/docs/handbook/host-access/
+$HTTP["host"] == "host.minikube.internal" {
+  alias.url = ( "" => "/usr/libexec/git-core/git-http-backend" )
+  setenv.set-environment = (
+    "GIT_PROJECT_ROOT" => "/var/www/gitlap/",
+    "GIT_HTTP_EXPORT_ALL" => "1"
+  )
+  cgi.assign = ( "" => "" )
+}