feat: ci cd pipeline

.gitlab-ci.yml

+stages:
+  - build
+  - deploy
+
+variables:
+  DOCKER_IMAGE: "if4054-final-project"
+
+build:
+  stage: build
+  script:
+    - docker build -t $DOCKER_IMAGE .
+    - docker-compose up -d
+  only:
+    - main
+
+deploy:
+  stage: deploy
+  script:
+    - docker-compose exec webserver airflow dags trigger telco_customer_churn_data_pipeline
+  only:
+    - main