Improved Dockerfile.
Improved Dockerfile.
rednut/docker-ubuntu,ossianpe/docker-build-centos,mj19910923/dockerfile.ubuntu.base,jbng/nodejs-es,retroconduct/ubuntu,tianzhidao28/ubuntu,liujuncheng/dockerfile-android,the1sky/ubuntu,dockerfile/ubuntu,ruige123456/5-25,pdeslaur/ubuntu,Christopher-Chopin/ubuntu