add alpine-ssh dockerimage and testing job

.gitlab-ci.yml

@@ -3,11 +3,19 @@
 #
 
 stages:
+  - docker-test
   - testing
   - build
   - review
   - deploy
 
+test-tuhh-docker:
+  stage: docker-test
+  allow_failure: false
+  image: collaborating.tuhh.de:5005/cfg0846/research-topics-mat-tuhh/alpine-ssh
+  script:
+    - echo "It's working"
+
 # always test the preprocessor with unit tests
 test-preprocessor:
   stage: testing

docker/alpine-ssh.Dockerfile

+# Download base image alpine 
+FROM alpine:latest
+
+# LABEL about the custom image
+LABEL maintainer="fabian.gabel@tuhh.de"
+LABEL version="0.1"
+LABEL description="This is custom Docker Image for \
+alpine with further tools in order to use openssh."
+
+# Disable Prompt During Packages Installation
+
+# Update Ubuntu Software repository
+RUN apk update 
+RUN apk add openssh-client bash
+
+CMD /bin/bash
\ No newline at end of file