Image build is optimized.

.gitlab-ci.yml

@@ -19,7 +19,7 @@ variables:
   DOCKER_TLS_CERTDIR: ""
   DOCKER_HOST: "unix:///var/run/docker.sock"
   DOCKER_OPTS: "--data-root=/mnt/volume/docker-data"
-  DOCKER_MEMORY: "3g"
+  DOCKER_MEMORY: "5g"
   DOCKER_CPUS: "2"
 
 build:
@@ -51,7 +51,7 @@ build:
     - df -h
     - free -h
     - top -b -n 1
-    - docker save -o /mnt/volume/flask-backend-full.tar flask-backend-full
+    - docker save flask-backend-full -o /mnt/volume/flask-backend-full.tar
   artifacts:
     paths:
       - /mnt/volume/flask-backend-full.tar