docker image的导出有两种方法:
- 方法一:docker save -o 导出的镜像名.tar 本地镜像名。后期使用该镜像,docker load -i 导出的镜像名.tar
$docker save -o centos.tar centos:latest #导出,用repository:tag可以导出镜像的元数据,若用images id则会丢失元数据,即在REPOSITORY和TAG的地方显示none。 $ls centos.tar $docker load -i centos.tar #导入镜像 $docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE centos latest dcb7b7451a2b 3 months ago 196.7 MB
- 方法二:docker push 镜像名
容器导出导入
- 容器导出为tar包
$docker export -o container.tar db49ebf163ec $ls container.tar
- 从容器导出的tar包导入成镜像,由于是导入的镜像,故需自己定义元数据,即镜像名和tag需自已定义。
语法: cat 导出的tar包 | docker import - 镜像名:tag
$cat container.tar | docker import - myimage/kaiz:1.0 $docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE myimage/kaiz 1.0 2169ac7d4e01 28 seconds ago 196.7 MB
- 从导入的镜像启动容器
$docker run -d 2169ac7d4e01 /bin/bash
宿主机与容器之间的文件复制
从宿主机文件到容器
- 通过docker inspect 查看挂载的路径,后从宿主机复制
- $docker cp /root/bb db49ebf163ec:/
从容器到宿主机
- $docker cp db49ebf163ec:/root/file.txt .
查看不同layers的命令是docker history 不是docker inspect
docker –help
Usage: docker [OPTIONS] COMMAND [arg...]
Commands:
attach Attach to a running container
build Build an image from a Dockerfile
commit Create a new image from a containers changes
cp Copy files/folders between a container and the local filesystem
create Create a new container
diff Inspect changes on a containers filesystem
events Get real time events from the server
exec Run a command in a running container
export Export a containers filesystem as a tar archive
history Show the history of an image
images List images
import Import the contents from a tarball to create a filesystem image
info Display system-wide information
inspect Return low-level information on a container or image
kill Kill a running container
load Load an image from a tar archive or STDIN
login Register or log in to a Docker registry
logout Log out from a Docker registry
logs Fetch the logs of a container
network Manage Docker networks
pause Pause all processes within a container
port List port mappings or a specific mapping for the CONTAINER
ps List containers
pull Pull an image or a repository from a registry
push Push an image or a repository to a registry
rename Rename a container
restart Restart a container
rm Remove one or more containers
rmi Remove one or more images
run Run a command in a new container
save Save an image(s) to a tar archive
search Search the Docker Hub for images
start Start one or more stopped containers
stats Display a live stream of container(s) resource usage statistics
stop Stop a running container
tag Tag an image into a repository
top Display the running processes of a container
unpause Unpause all processes within a container
version Show the Docker version information
volume Manage Docker volumes
wait Block until a container stops, then print its exit code
docker run –help
Commands:
-a, --attach=[] Attach to STDIN, STDOUT or STDERR
--add-host=[] Add a custom host-to-IP mapping (host:ip)
--blkio-weight=0 Block IO (relative weight), between 10 and 1000
--cpu-shares=0 CPU shares (relative weight)
--cap-add=[] Add Linux capabilities
--cap-drop=[] Drop Linux capabilities
--cgroup-parent= Optional parent cgroup for the container
--cidfile= Write the container ID to the file
--cpu-period=0 Limit CPU CFS (Completely Fair Scheduler) period
--cpu-quota=0 Limit CPU CFS (Completely Fair Scheduler) quota
--cpuset-cpus= CPUs in which to allow execution (0-3, 0,1)
--cpuset-mems= MEMs in which to allow execution (0-3, 0,1)
-d, --detach=false Run container in background and print container ID
--device=[] Add a host device to the container
--disable-content-trust=true Skip image verification
--dns=[] Set custom DNS servers
--dns-opt=[] Set DNS options
--dns-search=[] Set custom DNS search domains
-e, --env=[] Set environment variables
--entrypoint= Overwrite the default ENTRYPOINT of the image
--env-file=[] Read in a file of environment variables
--expose=[] Expose a port or a range of ports
--group-add=[] Add additional groups to join
-h, --hostname= Container host name
--help=false Print usage
-i, --interactive=false Keep STDIN open even if not attached
--ipc= IPC namespace to use
--kernel-memory= Kernel memory limit
-l, --label=[] Set meta data on a container
--label-file=[] Read in a line delimited file of labels
--link=[] Add link to another container
--log-driver= Logging driver for container
--log-opt=[] Log driver options
--lxc-conf=[] Add custom lxc options
-m, --memory= Memory limit
--mac-address= Container MAC address (e.g. 92:d0:c6:0a:29:33)
--memory-reservation= Memory soft limit
--memory-swap= Total memory (memory + swap), '-1' to disable swap
--memory-swappiness=-1 Tuning container memory swappiness (0 to 100)
--name= Assign a name to the container
--net=default Set the Network for the container
--oom-kill-disable=false Disable OOM Killer
-P, --publish-all=false Publish all exposed ports to random ports
-p, --publish=[] Publish a container's port(s) to the host
--pid= PID namespace to use
--privileged=false Give extended privileges to this container
--read-only=false Mount the container's root filesystem as read only
--restart=no Restart policy to apply when a container exits
--rm=false Automatically remove the container when it exits
--security-opt=[] Security Options
--sig-proxy=true Proxy received signals to the process
--stop-signal=SIGTERM Signal to stop a container, SIGTERM by default
-t, --tty=false Allocate a pseudo-TTY
-u, --user= Username or UID (format: <name|uid>[:<group|gid>])
--ulimit=[] Ulimit options
--uts= UTS namespace to use
-v, --volume=[] Bind mount a volume
--volume-driver= Optional volume driver for the container
--volumes-from=[] Mount volumes from the specified container(s)
-w, --workdir= Working directory inside the container