Hello World

1. 把現有的images 存成 tar 格式
# docker save -o hello_world_nginx.tar hello_world_nginx

# ls -lh
total 41M
-rw------- 1 root root 41M Mar 22 06:20 hello_world_nginx.tar

2. 複製到其他server
# scp hello_world_nginx.tar user@server-b

3. 將tar 檔仔入成 images
到 server-b
# docker load -i hello_world_nginx.tar
7cd52847ad77: Loading layer [==>]  7.338MB/7.338MB
d8a5a02a8c2d: Loading layer [==>]   5.32MB/5.32MB
5e59460a18a3: Loading layer [==>]  3.584kB/3.584kB
152a948bab3b: Loading layer [==>]  4.608kB/4.608kB
c4d67a5827ca: Loading layer [==>]  3.584kB/3.584kB
f1bee861c2ba: Loading layer [==>]  7.168kB/7.168kB
042cd3f87f43: Loading layer [==>]  29.85MB/29.85MB
12cdda72694e: Loading layer [==>]  15.87kB/15.87kB
Loaded image: hello_world_nginx:latest

# docker images
REPOSITORY                       TAG       IMAGE ID       CREATED          SIZE
hello_world_nginx                latest    86d3e15afc6f   39 minutes ago   40.7MB