I have created a simple spring-boot app and created an image of it using docker build Dockerfile.
I want to upload this image to a Linux machine and spin up the container there, Where I could find the image of this app to push it to Linux machine?
I am using Docker toolbox to run docker commands on Windows 10 Home edition.
Thanks in advance.
In order to push a docker image you need a registry. Public images can be pushed through hub.docker.com. Private containers can be pushed through private registries. There are lots of registries like: nexus 3 & gitlab.
so in a nutshell you need to do:
install a docker registry on a machine which both your dev machine and prod machine can access
Configure the registry endpoints for access
login to the private registry through docker
Tag your image for the registry
push the image
go to the server
pull the image from the private registry
run it on the server
OR
without a registry
build the image again on the linux machine
run it from the linux machine from the local build
good luck
Related
I'm novice in docker and I would like to deploy a docker private registry on my host (Windows10 usign docker for windows) with users permissions so I used TLS to securite it according to the doc from https://docs.docker.com/registry/deploying/
I have the docker private registry deployed and to push the user must do docker login command.
Now, I would like to connect a UI to my private registry and make it read only to be able to pull and for that I tried to setup Harbor, Portus and many other examples but they are not documented for windows.
I tried to use this project https://github.com/kwk/docker-registry-frontend but same thing.
All of these projects they bind files in volumes docker run -v pathToFiles:pathToFiles:ro but in windows it is not supported.
I tries to make modification in images and put the files into them and build a new images with docker commit but the UI still not work or not connected to my server.
So, what is the best way to deploy a docker private registry with the docker registry open source in docker for windows AND manage user permissions with auth ? Should I use a reverse proxy ? but how on windows?
I'm not using docker EE.
Thank you.
We need to transfer large number of docker images from Azure DevOps to private container registry (this registry does not have access to the Internet). For this matter there is proxy machine with Windows Server with Azure Cli and access to the Azure DevOps, but we are restricted with installing Docker there.
Is there a way to pull docker images from Azure DevOps and push them into another container registry without installed Docker? Perhaps there is slim version of Docker or some official script.
You can basically save it as an archive, and reload it the same way.
When we run the command docker image ls, a list of images on the host machine are listed. Are these images stored on some kind of registry on the local machine.
If yes, what is the name of registry.
Also, it is possible to create a registry on the host machine using some docker image for registry service in the form ip:5000. If this is created, will it be different from the first type of registry(docker image ls)
The question is mainly related to relation between registry and the images within it and not about the location on the file system
When you use docker image ls, it will show all your images in local, including the one which you use docker build & the one which you use docker pull.
On linux for example, they are by default stored in /var/lib/docker/{driver-name}, the driver-name could be overlay2, overlay, aufs, etc. But this called docker local images, not docker registry.
What is Docker registry?
The Registry is a stateless, highly scalable server side application that stores and lets you distribute Docker images. The Registry is open-source, under the permissive Apache license.
dockerhub is just one of the registry, if you do not want to use it, you of course could setup a private registry by yourself with next command:
docker run -d -p 5000:5000 --name registry registry:2
Then, you can push, pull from this registry, detail refers to official guide.
I have docker machine and by default it pulls my images from docker hub.
Now we have our own repo which can serve as a remote proxy to docker hub.
We can pull with docker pull server/repo/image.
Now I want that docker pull image resolves to our registry instead of docker hub. How can I achieve this in docker machine?
Changing the default docker registry is not possible. You can only configure a private registry to act as a mirror for the dockerhub registry as documented in Registry as a pull through cache.
Check moby-33069 issue which has requested this feature.
It can be done if you're using the Red Hat fork of Docker which is in their repo's, CentOS or EPEL not sure.
You use the --add-repository flag.
If I'm not mistaken you can also change the default repo if you build from source.
Is the Docker engine installed on the server to build off of the images it receives and then runs the containers that are built from it or is the engine installed on the client and then the building of images into containers is done there? Is the Docker engine installed on both the client and server and does different actions on each side?
Docker Engine is responsible for building, pulling, pushing the image and then running them as container. Docker Engine is installed on the server side and the client side just consist of the CLI used for issuing commands to Docker Engine. The Client uses Rest API to issue commands to server.
In your case both Machine A and Machine B will have Docker Engine. You will need the Docker Engine on Machine A to build the image and then push it to a repository (like Dockerhub). On Machine B you will need Docker Engine to pull the image and then create containers from it.