Attempt at installing gap-packages

Author: nthiery

Dockerfile

@@ -1,13 +1,14 @@
 # Dockerfile for binder
-FROM registry.gitlab.com/sagemath/sage/sagemath:9.0.beta0-py3
+FROM registry.gitlab.com/sagemath/sage/sagemath-dev:9.0.beta3-py3
+
 COPY --chown=sage:sage . ${HOME}
 
 RUN sudo apt-get update && sudo apt-get -qy install graphviz build-essential git && sudo apt-get clean
+RUN sage -i gap_packages
 RUN sage -pip install RISE
 RUN sage -pip install dot2tex
 RUN sage -pip install sage_combinat_widgets
 RUN sage -pip install sage-explorer
 RUN sage -pip install git+https://github.com/nthiery/sage-gap-semantic-interface
 RUN sage -pip install git+https://github.com/nthiery/sage-gap-semantic-interface
 RUN sage -pip install git+https://github.com/nthiery/sage-semigroups/
-#RUN sage -i gap_packages