Basic concepts:
Container
Container. Each container can be viewed as a standalone host. The creation of container usually has an image as its template. Analogy to a virtual machine can be understood as image is the mirror of the virtual machine, and container is a running virtual machine. A virtual machine image can create multiple running virtual h
Http://blog.e3rp4y.me/blog/2014/05/23/copy-file-from-host-to-docker.html------------------------------------------------------------Docker is a Linux container management software.Let's talk about several ways to copy files from a host to Docker today.Before sharing, let's look at how strong the
Using the-v parameter in Docker Practice 2 links the host to the relevant directory in the container (mount), so we can use this channel to put the data we want to copy with each other, so that we can use the CP command to copy the file.In addition to this approach, we can also use different commands to copy the data s
One for building and pushingDockerof the MirrorMavenPlug - ins.Use the Maven plugin to build the Docker image, Docker mirror push it to the DockerHub top, or the private warehouse, the previous article is handwritten Dockerfile , this article with the open source plug-in docker-maven-plugin operationThe following actio
1 First you have to prepare a hub account, go to https://hub.docker.com register it!2 Create a new warehouse at the hub, which is similar to the one on GitHub. Creation---> Create repository (Creating a knowledge Base) and then just a name, I'll call it Ubuntu, so the path is Wherein/ubuntu.3 Run Docker PS View container, here is to get to container ID4 Commit a container command: Docker commit CONTAINER ID
启docker服务Finally log off and log back on to the system.
Second, Docker common commands Docker--help Docker run--help use a similar notation to see Help for subcommands Exit exit container Docker Run-it BusyBox Start a new container instance for BusyBox mirroring
, the inside is a class Linux file directory structure, save the changes made by this layer:?435050075B3f881611b0f4c141bb723f38603caacd31a13a185c1a38acfb4ade TAR-TF Layer. TarEtc/etc/apt/etc/apt/apt. conf. D/etc/apt/apt. conf. D/docker-cleanetc/apt/apt. conf. D/docker-gzip-indexesetc/apt/apt. conf. D/docker-no-languagesetc/dpkg/etc/dpkg/dpkg. CFG. D/etc/dpkg/dpkg
":"6d4946999d4fb403f40e151ecbd13cb866da125431eb1df0cdfd4dc72674e3c6"}}
Go to a folder and view the json file. It is a json definition that saves a lot of information, mainly about the image configuration information. The brief structure is as follows:
Layer.tar is also a packaging file. We can see below that it contains a structure similar to the Linux File directory, saving the modifications made by this layer:
➜ 435050075b3f881611b0f4c141bb723f386
1. Generating a Docker image for an ASP. NET Core ApplicationDownload this case project: Https://github.com/dotnet/dotnet-docker/tree/master/samples/aspnetappWhen the download is complete, generate a mirror named Aspnetapp image for this project.Docker build-t Aspnetapp.In order to make a difference I created a a.html
Pt-l8tdo5 Yum.log [Root@centos7 tmp]#
Six. Docker Common commands
Docker Stop
Seven. Guide to the local mirror library
Go back to the host, copy the image exported from the virtual machine to the local hr:~ hr$ mkdir-p docker/images hr:~ hr$ cd
context of the error, Mv,copy,add file location is relative/soft.
[Root@localhost soft]# Docker build-t centos:bases-f/soft/docker/dockerfile/usr
Unable to prepare context:the Doc Kerfile (/soft/docker/dockerfile) must be within the build context (/usr)
This resolves an issue where the Dockerfile file is not in t
By default, Docker is stored in the following locations:
/var/lib/docker
Generally under the root partition we will not give too much. The more images and containers we have, the more generally we have two workarounds.
1. Mount large partitions to/var/lib/docker:
Generally choose to establish logical partition LVM to facilitate later expansion of the collective.
Privkey. pem-private key of the certificate
6. Create the letsencrypt directory and copy the Certificate file to the directory:
$ mkdir /home/ubuntu/harbor/letsencrypt/ cd /home/ubuntu/harbor/letsencrypt/$ sudo cp /etc/letsencrypt/archive/docker.MySite.com/fullchain1.pem docker.MySite.com.crt$ sudo cp /etc/letsencrypt/archive/docker.MySite.com/privkey1.pem docker.MySite.com.key
7. modify the configuration file/home/ubuntu/harbor. cfg:
# Set ui_ur
Setting environment variables during the mirroring build processEnvironment variables are persisted to any container in the mirrored buildRun can use the-e flag to pass environment variables that will only be valid at run time
User command
Used to specify the running user of the imageRun can overwrite the variable by using the-u flagIf you do not specify a user group, the default user group is root
Volume command
Used to add volumes to a mirrored-based container
Publish the ASP. NET 5 app as a Docker image (Linux edition)?TipsThis article was updated: December 20, 2015.AnnotationsIf you need to run a Docker image on the Windows platform, or use it on Visual Studio 2015, see a later blog post (not currently published) that publishes the ASP. NET 5 app as a
Use the-v parameter in Docker Practice 2 to associate the host with the related directory in the container (mount), so we can use this channel to place the data that we want to copy with each other so that we can copy the file with the CP command.
In addition to this approach, we can also use different commands to copy
Docker Quick Start series (1): Image concepts and related operationsWhat is Docker?
One of the first questions I encountered about docker is what can docker do? What is docker? Here, let's take a look at Baidu encyclopedia's brief
Copy files from the container to the host
[Root@oegw1 soft]# Docker PS
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8d418a7b6021 Postgres "/docker-entrypoint. 7 hours ago up 7 hours Test1
[Root@oegw1 soft]# Docker exec-t-I. 8d418a7b6021/bin/bash
root@oegw1:/var/lib/
Docker image, container, warehouse concept
Docker mirroring
Docker mirroring (image) is similar to a virtual machine image, and can be interpreted as a read-only template for the Docker
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.