feat: add ci pipeline

.gitlab-ci-maven.yml

+
+variables:
+  MAVEN_CLI_OPTS: "-Dmaven.repo.local=$CI_PROJECT_DIR/maven-repo"
+
+cache:
+  paths:
+    - maven-repo
+
+maven:compile:
+  stage: compile
+  tags:
+    - docker
+  image: maven:3-openjdk-11-slim
+  script:
+    - mvn $MAVEN_CLI_OPTS clean
+    - mvn $MAVEN_CLI_OPTS compile test-compile
+  only:
+    changes:
+      - pom.xml
+      - src/**/*
+  artifacts:
+    expire_in: 3h
+    paths:
+      - target/
+
+maven:test:
+  stage: test
+  tags:
+    - docker
+  image: maven:3-openjdk-11-slim
+  script:
+    - mvn $MAVEN_CLI_OPTS test
+  dependencies:
+  needs:
+    - maven:compile
+  only:
+    changes:
+      - pom.xml
+      - src/**/*
+
+.maven:deploy: &mavenDeploy
+  stage: deploy
+  tags:
+    - docker
+  image: maven:3-openjdk-11-slim
+  script:
+    - 'mvn $MAVEN_CLI_OPTS deploy -s transfer-gitlab-settings.xml'
+  needs:
+    - maven:compile
+    - job: maven:test
+      artifacts: false
+
+maven:publish:master:
+  <<: *mavenDeploy
+  only:
+    refs:
+      - master
+    changes:
+      - pom.xml
+      - src/**/*
+
+maven:publish:release:
+  <<: *mavenDeploy
+  variables:
+    BUILD_NUMBER: $CI_COMMIT_TAG
+  only:
+    refs:
+      - /^(\d+\.){2}?\d+$/
+    changes:
+      - pom.xml
+      - src/**/*
+  except:
+    - branches

.gitlab-ci-mkdocs.yml

+
+mkdocs:compile:
+  stage: compile
+  image: python:3.8
+  tags:
+    - docker
+  script:
+    - pip install -r requirements.txt -U
+    - mkdocs build --strict
+  only:
+    changes:
+      - docs/**/*
+      - mkdocs.yml
+  artifacts:
+    expire_in: 3h
+    paths:
+      - site/
+
+mkdocs:bundle:
+  stage: deploy
+  image: alpine
+  tags:
+    - docker
+  script:
+    - tar c -zvf documentation.tar.gz site
+  needs:
+    - mkdocs:compile
+  only:
+    changes:
+      - docs/**/*
+      - mkdocs.yml
+  artifacts:
+    expire_in: 3 days
+    paths:
+      - ./*.tar.gz
+
+mkdocs:deploy:
+  stage: deploy
+  tags:
+    - production
+  variables:
+    EXPORT_DIR: "/var/www/html/pages"
+  script:
+    - mkdir -p "$EXPORT_DIR/$CI_PROJECT_NAME"
+    - cp -r site/* "$EXPORT_DIR/$CI_PROJECT_NAME"
+  needs:
+    - mkdocs:compile
+  only:
+    refs:
+      - master-disabled-for-now
+    changes:
+      - docs/**/*
+      - mkdocs.yml

.gitlab-ci.yml

+
+stages:
+  - compile
+  - test
+  - deploy
+
+include:
+  - local: '/.gitlab-ci-maven.yml'
+  - local: '/.gitlab-ci-mkdocs.yml'