Update rstudio

- Update Dockerfile for latest version
- Add .gitlab-ci.yml

rstudio/.gitlab-ci.yml

+image: docker:stable
+services:
+  - docker:stable-dind
+
+variables:
+  DOCKER_DRIVER: overlay2
+  DOCKER_TLS_CERTDIR: "/certs"
+  CRAN: https://cloud.r-project.org
+  R_VERSION_UPDATE: "false"
+
+before_script:
+  - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+  - export VERSION_MAJ_MIN_PAT=`sed -n "s|.*R_VERSION:-\([0-9]\.[0-9]\.[0-9]\).*|\1|p" rstudio/latest.Dockerfile`
+  - export VERSION_MAJ_MIN=`echo "${VERSION_MAJ_MIN_PAT:0:3}"`
+  - export VERSION_MAJ=`echo "${VERSION_MAJ_MIN_PAT:0:1}"`
+
+build-latest:
+  stage: build
+  script:
+    - docker build --build-arg CRAN=$CRAN --pull -t $CI_REGISTRY_IMAGE:latest -f rstudio/latest.Dockerfile .
+    - docker tag $CI_REGISTRY_IMAGE:latest $CI_REGISTRY_IMAGE:$VERSION_MAJ_MIN_PAT
+    - docker tag $CI_REGISTRY_IMAGE:latest $CI_REGISTRY_IMAGE:$VERSION_MAJ_MIN
+    - docker tag $CI_REGISTRY_IMAGE:latest $CI_REGISTRY_IMAGE:$VERSION_MAJ
+    - docker push $CI_REGISTRY_IMAGE:latest
+    - docker push $CI_REGISTRY_IMAGE:$VERSION_MAJ_MIN_PAT
+    - docker push $CI_REGISTRY_IMAGE:$VERSION_MAJ_MIN
+    - docker push $CI_REGISTRY_IMAGE:$VERSION_MAJ
+  only:
+    refs:
+      - master
+    changes:
+      - rstudio/latest.Dockerfile
+
+build-version:
+  stage: build
+  script:
+    - docker build --pull -t $CI_REGISTRY_IMAGE:3.6.2 -f rstudio/3.6.2.Dockerfile .
+    - docker push $CI_REGISTRY_IMAGE:3.6.2
+  only:
+    refs:
+      - freeze-version
+    changes:
+      - rstudio/3.6.2.Dockerfile

rstudio/latest.Dockerfile

-FROM rocker/r-ver:3.6.3
+FROM registry.gitlab.b-data.ch/r/r-ver:3.6.3
 
 ARG RSTUDIO_VERSION
 #ENV RSTUDIO_VERSION=${RSTUDIO_VERSION:-1.2.5033}
@@ -95,7 +95,4 @@ COPY pam-helper.sh /usr/lib/rstudio-server/bin/pam-helper
 
 EXPOSE 8787
 
-## automatically link a shared volume for kitematic users
-VOLUME /home/rstudio/kitematic
-
 CMD ["/init"]