Add new file

.gitlab-ci.yml

+stages:
+    - build
+
+docker_build:
+    stage: build
+    tags:
+        - docker
+    script:
+        - cp -R oraclelinux7/12.2.0.1/* ./
+        - echo "$CI_REGISTRY_PASSWORD" | docker login $CI_REGISTRY -u $CI_REGISTRY_USER --password-stdin
+        - docker build --pull -t $CI_REGISTRY_IMAGE/oracle/instantclient:12.2.0.1 .
+        - docker push $CI_REGISTRY_IMAGE/oracle/instantclient:12.2.0.1
+        - docker images -a | grep "instantclient" | awk '{print $3}' | sort -u | xargs docker rmi -f