add ci badges

Author: wildone

README.md

@@ -1,5 +1,7 @@
 ## CentOS 7 with Java and FFMPEG
 
+[![pipeline status](https://gitlab.com/aem.design/java-ffmped/badges/master/pipeline.svg)](https://gitlab.com/aem.design/java-ffmpeg/commits/master)
+
 This is docker image based on [aemdesign/oracle-jdk](https://hub.docker.com/r/aemdesign/oracle-jdk/) with AEM base libs
 
 ### Included Packages