Bump version to v1.4

Author: greatfireball

Dockerfile

@@ -3,7 +3,7 @@ FROM ubuntu:${ubuntu_version}
 
 LABEL maintainer="frank.foerster@ime.fraunhofer.de" \
       description="Base container for the microPIECE package" \
-      version="1.3" \
+      version="1.4" \
       org.label-schema.vcs-ref=$VCS_REF \
       org.label-schema.build-date=$BUILD_DATE \
       org.label-schema.vcs-url="https://github.com/microPIECE-team/microPIECE-dockerbase"