Tune gcc options for arm-linux-gnueabihf

gitlabci/docker-hub-arm.yml

@@ -18,7 +18,7 @@ docker-hub-build-arm:
     - cd $CI_PROJECT_DIR
     - apk add --no-cache curl
     - export SQUID_VERSION=$(curl -s http://www.squid-cache.org/Versions/v4/ | egrep -m 1 -oh squid-.*.tar.gz | cut -d '"' -f1)
-    - docker build --build-arg SQUID_VERSION=$SQUID_VERSION --pull -t $CONTAINER_BUILD_NOPROD_NAME .
+    - docker build -f Dockerfile.arm --build-arg SQUID_VERSION=$SQUID_VERSION --pull -t $CONTAINER_BUILD_NOPROD_NAME .
     - docker push $CONTAINER_BUILD_NOPROD_NAME
 
 .services: