Added docker functionality to provide image via server

.gitlab-ci.yml

+services:
+    - docker:dind
+
+variables:
+    DOCKER_HOST: tcp://docket:2375
+    DOCKER_DRIVER: overlay2
+
+docker:
+    image: docker:stable
+    services:
+        - docker:dind
+    stage: docker
+    script:
+

Dockerfile

+FROM debian:stretch
+
+RUN apt-get update -qq && \
+    apt-get upgrade -qq -y
+RUN apt-get install -qq -y gfortran make libbz2-dev wget
+RUN cd /opt && \
+    wget https://gibuu.hepforge.org/downloads?f=buuinput2019.tar.gz && \
+    tar xvzf downloads?f=buuinput2019.tar.gz && \
+    wget https://gibuu.hepforge.org/downloads?f=release2019.tar.gz && \
+    tar xvzf downloads?f=release2019.tar.gz && \
+    ls -ahl && \
+    cd release2019 && \
+    make -j withROOT=0 && \
+    rm -rf /opt/*.tar.gz  
+
+ENV CONTAINER_GIBUU_EXEC=/opt/release2019/objects/GiBUU.x
+

Makefile

@@ -28,7 +28,7 @@ run: GiBUU.simg
 			 /bin/sh run.sh $$CONTAINER_JOBCARD_DIR $$CONTAINER_OUTPUT_DIR 
 
 lyon:
-	@echo "TO DO"
+	singularity build GiBUU.simg docker.km3net.de
 
 clean:
 	@rm -rf output