Added CI build

.gitlab-ci.yml

+image: golang:latest
+
+stages:
+  - build
+  - release
+
+build:
+  stage: build
+  script:
+    - mkdir -p rest-samba-config
+    - go build -o rest-samba-config ./...
+  after_script:
+    - echo BUILD_JOB_ID=$CI_JOB_ID > ci.env
+  artifacts:
+    paths:
+      - rest-samba-config
+    reports:
+      dotenv: ci.env