diff --git a/README.md b/README.md
index a3a30ff..e61c26f 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,16 @@ Nagios/Icinga check plugin to monitor available upgrades on Alpine Linux and its
 
 ## Installation
 
+### From Dockerfile
+
+```dockerfile
+# Install check_apk
+ADD https://gitea.zionetrix.net/bn8/check_apk/raw/branch/master/check_apk /usr/lib/nagios/plugins/check_apk
+RUN chmod 750 /usr/lib/nagios/plugins/check_apk
+```
+
+### Manual
+
 ```bash
 apk add wget
 mkdir -p /usr/lib/nagios/plugins