create team23/cypress image

.gitlab-ci.yml

+image: docker:latest
+
+services:
+  - name: docker:dind
+
+stages:
+  - build
+
+build10:
+  stage: build
+  only:
+    refs:
+      - master
+  script:
+    - /bin/sh build.sh 10

10/Dockerfile

+FROM cypress/browsers:node10.16.0-chrome77

README.md

+# Supported tags and respective Dockerfile links
+
+* `10`: [Dockerfile](10/Dockerfile)

build.sh

+#!/bin/bash
+
+VERSION="${1:-}"
+ADDITIONAL="${2:-}"
+if [ -z "$VERSION" ]
+then
+    echo "Error: No version supplied"
+    echo "Usage: $0 <version> [additional]"
+    exit 1
+fi
+
+set -o errexit
+set -o pipefail
+
+if [ -z "$CI_REGISTRY" ]
+then  # outside gitlab ci runner
+    docker login docker.team23.de
+    BUILD_PROJECT_NAME=$( basename $( pwd ) )
+    BUILD_IMAGE_BASE="docker.team23.de/docker/$BUILD_PROJECT_NAME"
+else  # inside gitlab ci runner
+    docker login -u gitlab-ci-token -p "$CI_JOB_TOKEN" "$CI_REGISTRY"
+    BUILD_IMAGE_BASE="$CI_REGISTRY/$CI_PROJECT_PATH"
+fi
+
+
+# Build Image
+docker build --pull -t "$BUILD_IMAGE_BASE:$VERSION" "$VERSION"
+# only CI should be allowed push images
+[ -n "$CI_REGISTRY" ] && docker push "$BUILD_IMAGE_BASE:$VERSION"
+
+if [ ! -z "$ADDITIONAL" ]
+then
+    # Build additional image (usually latest)
+    docker build --pull -t "$BUILD_IMAGE_BASE:$ADDITIONAL" "$VERSION"
+    [ -n "$CI_REGISTRY" ] && docker push "$BUILD_IMAGE_BASE:$ADDITIONAL"
+fi