- How to login to docker in the terminal
- How to create a docker image and push the image to Dockerhub
- How to push images to Google Cloud
docker login --username:ralmeid
Then it will ask to type a password.
Note Sometimes it is required to issue the commands using sudo
In this example we will use latest ubuntu image.
- Pull the latest Ubuntu image:
docker pull ubuntu
- Create the new container, such that we can add our LAMP stack to Ubuntu. This example names the container lamp-server-template and adds the bash option to the docker command to enter the container in order to continue making changes:
docker run --name lamp-server-template -it ubuntu:latest bash
- Into the bash update and upgrade the ubuntu image.
apt update
apt upgrade
- Install the lamp-server metapackage inside the container:
apt-get install lamp-server^
This upgrade and installation will take longer than it would if you were working on a standard server. During the installation of the LAMP stack, you will be prompted to create a MySQL root user password. When the installation completes, exit the container:
exit
Use docker ps -a to list all of the available containers:
To commit changes to the image, we must first have the container ID. As with the example above, the docker ps -a command lists the ID as 3aee3f9bd45b. We’re going to name our new image lamp-server-template and commit the changes with the command:
docker commit 3aee3f9bd45b lamp-server-template
If you run the docker images command, you’ll see the new image, lamp-server-template listed.
When you pull down an image from Docker Hub, the Status line includes the image tag as shown here:
Status: Downloaded newer image for ubuntu:latest
Docker tags are an easy way for you to know what version or release you are working with. This is especially useful for creating new images from a base image. For example, if you have a Ubuntu image you use as a base to create different images, Docker tags help you track the differences:
lamp-server-template:v1.8.10.2017
lamp-server-template:v2.8.10.2017
lamp-server-template:v3.8.10.2017
Create image tags with a docker commit. Using the example tags above, tag the new image with a version number and date:
docker commit 3aee3f9bd45b lamp-server-template:v1.8.0
Run docker images to see the new image created along with the associated tag:
Before pushing the image to Docker Hub, add a description, your full name (FULL NAME in the example here), and Docker Hub username (USERNAME) in the docker commit:
docker commit -m "Added LAMP Server" -a "FULL NAME" d09dd0f24b58 USERNAME/lamp-server-template:v1.8.10.2017
Once this is fully tagged, log in and push it to Docker Hub:
docker login docker.io
You will be prompted for your Docker Hub credentials. When authentication succeeds, you will see Login succeeded.
Check the image repository with the command
docker images
Now, you can push the image to the Hub with the command:
docker push rralmeid/lamp-server-template:v1.8.0
Open a browser, log in to your Docker Hub account, and go your main repository. You will see the new image listed. Click on the image and then click on the Tags tab to see the added tag:
Our image, complete with tags, on Docker Hub
Requirements:
- Install Docker in your computer
- Set up a Google Cloud account and Project.
1 - Login to google repository
Login if using the old gcr.io
sudo cat neuvector-373118-2dd92e80c2ea.json | sudo docker login -u _json_key --password-stdin https://gcr.io
Login if using the new artifact Registry
sudo cat neuvector-373118-2dd92e80c2ea.json | sudo docker login -u _json_key --password-stdin https://us-docker.pkg.dev
2 - Push image
Push images to gcr.io repository.
sudo docker push gcr.io/lofty-chemist-373111/lamp-server-template
Push images to Artifact repository.
sudo docker push us-docker.pkg.dev/neuvector-373118/gcr.io/ubuntu
To leave kubectl cluster from cli.
kubectl config unset current-context