1. 查看镜像id
sudo docker images
REPOSITORY TAG IMAGE ID CREATED SIZE quay.io/calico/node v1.0.1 c70511a49fa1 6 weeks ago 257 MB hello-world latest 48b5124b2768 2 months ago 1.84 kB quay.io/coreos/flannel v0.7.0 63cee19df39c 2 months ago 73.8 MB quay.io/calico/cni v1.5.5 ada87b3276f3 2 months ago 67.1 MB
2. 选择要打包的镜像,执行打包命令
sudo docker save -o quay.io-calico-node-1.tar quay.io/calico/node
或
docker save REPOSITORY:TAG | gzip > REPOSITORY:TAG.tar.gz
会在当前目录下生成导出文件xxx.tar,然后将此文件下载到本地
3. 在开发环境导入上述打包的镜像
docker load -i quay.io-calico-node-1.tar
0a43edc59c00: Loading layer 27.59 MB/27.59 MB 69a5574b2581: Loading layer 3.636 MB/3.636 MB fb0933709f36: Loading layer 3.913 MB/3.913 MB 7384abd120f5: Loading layer 3.859 MB/3.859 MB e34911610de0: Loading layer 27.06 MB/27.06 MB d6ec327c8cbe: Loading layer 6.656 kB/6.656 kB Loaded image ID: sha256:ada87b3276f307a6b1b1ada15820b6c9842fd839fe5cc46ad5db8af81f7fd271
至此,可以使用本地镜像了!
4. 批量导入导出镜像工具
①导出镜像:
import re import os import subprocess if __name__ == "__main__": os.system('rm -rf /tmp/xfleet') os.system('mkdir -p /tmp/xfleet') p = subprocess.Popen('docker images', shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) for line in p.stdout.readlines(): # 此处的正则表达式是为了匹配镜像名以ufleet为开头的镜像 # 实际使用中根据需要自行调整 m = re.match(r'(^ufleet[^s]*s*)s([^s]*s)', line.decode("utf-8")) if not m: continue # 镜像名 iname = m.group(1).strip(' ') # tag itag = m.group(2) # tar包的名字 tarname = iname.split('/')[-1] print(tarname) tarball = tarname + '.tar' ifull = iname + ':' + itag #save cmd = 'docker save -o ' + tarball + ' ' + ifull os.system(cmd) # 将tar包放在临时目录 os.system('mv %s /tmp/xfleet/'%tarball) retval = p.wait()
②导入镜像:
import os import sys if __name__ == "__main__": tarball = sys.argv[1] print(tarball) workdir = '/tmp/xfleet-images' os.system('rm -rf %s'%workdir) os.system('mkdir -p %s'%workdir) os.system('tar -zxvf %s -C %s'%(tarball, workdir)) os.chdir(workdir) files = os.listdir(workdir) for filename in files: print(filename) os.system('docker load -i %s'%filename)
容器打包成镜像:
docker commit -a "xxx" -m "xxx" 容器名称或id 打包的镜像名称:标签 OPTIONS说明: -a :提交的镜像作者; -c :使用Dockerfile指令来创建镜像; -m :提交时的说明文字; -p :在commit时,将容器暂停。
小工具参考资料:http://www.cnblogs.com/ksir16/p/8865525.html