Reduce layer

Dockerfile

@@ -4,8 +4,7 @@ ADD . /opt/dhcp
 
 WORKDIR /opt/dhcp
 
-RUN rm -rf vendor/*
-    rm -f app/config/parameters.yml; \
+RUN rm -f app/config/parameters.yml; \
     rm -f app/config/bundles/hwi/oauth-bundle/parameters.yml; \
     rm -f app/config/bundles/ik/audit-bundle/parameters.yml; \
     rm -f app/config/bundles/ik/base-admin-bundle/parameters.yml; \