adding cicd related files

/target/

include: 

  - ci-templates/default.yml

  - local: ci-templates/build.yml

    rules:

      - if: '$CI_COMMIT_REF_NAME == "main" || $CI_COMMIT_REF_NAME == "develop" || $CI_COMMIT_REF_PROTECTED'

  - local: ci-templates/build_unprotected.yml

    rules:

      - if: '$CI_COMMIT_REF_NAME != "main" && $CI_COMMIT_REF_NAME != "develop" && !$CI_COMMIT_REF_PROTECTED'

maven_build:

  extends: .maven_build

<?xml version="1.0" encoding="UTF-8"?>

<projectDescription>

	<name>org.etsi.osl.controllers.sylva</name>

	<comment></comment>

	<projects>

	</projects>

	<buildSpec>

		<buildCommand>

			<name>org.eclipse.jdt.core.javabuilder</name>

			<arguments>

			</arguments>

		</buildCommand>

		<buildCommand>

			<name>org.eclipse.m2e.core.maven2Builder</name>

			<arguments>

			</arguments>

		</buildCommand>

	</buildSpec>

	<natures>

		<nature>org.eclipse.jdt.core.javanature</nature>

		<nature>org.eclipse.m2e.core.maven2Nature</nature>

	</natures>

</projectDescription>

.maven_build:

  extends: .default

  stage: build

  image: maven:3.9.5-ibm-semeru-17-focal

  script:

    - mvn deploy -s ci_settings.xml -Dversion=$APP_VERSION

  artifacts:

    paths:

      - target/

.docker_build:

  extends: .default

  stage: build

  image:

    name: gcr.io/kaniko-project/executor:debug

    entrypoint: [""]

  script:

    - export DOCKER_TAG=$APP_VERSION

    - |

      if [ "$CI_COMMIT_REF_NAME" = "main" ]; then

        echo "Pushing Docker image with tag 'latest'"

        export DOCKER_TAG=latest

      fi

    - /kaniko/executor --context "${CI_PROJECT_DIR}" --dockerfile "${CI_PROJECT_DIR}/Dockerfile" --destination "${CI_REGISTRY_IMAGE}:$DOCKER_TAG"

stages:

  - .pre

  - build

  - test

  - post

  - security

.default:

  before_script:

    - |

      if [ "$CI_COMMIT_REF_PROTECTED" = true ] && [ -n "$CI_COMMIT_TAG" ]; then

        export APP_VERSION=$CI_COMMIT_TAG

      elif [ "$CI_COMMIT_REF_NAME" = "develop" ]; then

        export APP_VERSION="develop"

      else

        export APP_VERSION=$CI_COMMIT_REF_NAME

      fi