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: "5g"
+  DOCKER_MEMORY: "4g"
   DOCKER_CPUS: "2"
 
 build:
@@ -35,6 +35,7 @@ build:
     - docker system prune -a -f --volumes || true
     - docker container prune -f || true
     - docker network prune -f || true
+    - docker image prune -a -f || true
     - df -h
     - free -h
     - top -b -n 1
@@ -46,6 +47,7 @@ build:
     - docker volume prune -f
     - docker container prune -f
     - docker network prune -f
+    - docker image prune -a -f
   script:
     - docker build --cache-from=flask-backend-full --no-cache --progress=plain -t flask-backend-full -f flask_ml_api/Dockerfile .
     - df -h