document installation

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

README.md

@@ -32,6 +32,47 @@ We accept PR on github for one-off/small contributions but it is encouraged to
 submit your patches with git-send-email to the Patchew development and
 discussion mailing list, patchew-devel@redhat.com.
 
+## Installing
+
+Patchew can be installed in a podman container; it is possible to connect
+the container to a webserver running on the host via either port 80 or a
+FastCGI socket.
+
+Either SQLite or PostgreSQLcan be used as the database backend; the latter
+requires a separate container.
+
+The `scripts/deploy` scripts is a wrapper script that uses Ansible to
+install the various components of Patchew.  For example:
+
+```
+# ./scripts/deploy --db localhost
+# systemctl enable patchew-server-db
+# ./scripts/deploy --server localhost
+# systemctl enable patchew-server
+```
+
+A sample nginx configuration is as follows:
+
+```
+upstream patchew-server {
+    server unix:/data/patchew-server/data/nginx.sock fail_timeout=0;
+}
+
+server {
+    server_name patchew.org;
+    proxy_set_header X-Forwarded-Host $host;
+    proxy_set_header Host            $host;
+    location / {
+      proxy_pass http://patchew-server;
+    }
+    proxy_connect_timeout       600;
+    proxy_send_timeout          600;
+    proxy_read_timeout          600;
+    send_timeout                600;
+    client_max_body_size 100M;
+}
+```
+
 ## Known issues
 
  - Binary patches are not recognized correctly.