fix: exit script if something failed in CD

.drone.yml

       port: 22
       key:
         from_secret: ssh_key
+      script_stop: true
       script:
-        - cd /home/rhnvrm/apps/rohanverma.net && git fetch origin && git checkout $DRONE_COMMIT
+        - cd /home/rhnvrm/apps/rohanverma.net
+        - git fetch origin
+        - git checkout $DRONE_COMMIT
         - cd /home/rhnvrm/proxy
         - docker-compose build rohanvermanet
         - docker-compose up -d rohanvermanet