Set permissions on app directory and use correct user

Dockerfile

@@ -30,7 +30,8 @@ ENV MAVEN_HOME /usr/share/maven
 # Add configuration files, bashrc and other tweaks
 COPY ./s2i/bin/ $STI_SCRIPTS_PATH
 
-USER default
+RUN chown -R 1001:0 /opt/app-root
+USER 1001
 
 # Set the default CMD to print the usage of the language image
 CMD $STI_SCRIPTS_PATH/usage