Update 'README.md'

README.md

@@ -6,6 +6,6 @@ Requirements: Docker and Docker Compose
 
 Put the required CPEE `js_libs` on your host under `/var/www/html/`. If you pick a different path, then also update the `docker-compose.yml`.
 
-Run `docker build -t "cpee:1.4.25" . `
+Run `docker build -t "cpee:1.4.26" . `
 
 Run `docker-compose up`