In this lab, we will be creating docker image with dockerfile and run a container using it
In case you prefer a video, check below our YouTube video for this lab
Create docker hub account. Docker Hub skip this step if you already have one
Open Play with Docker
login with your docker hub account.
Click on start
It will start a 4 hr session
click on + ADD NEW INSTANCE
Task: Create a Dockerfile to create a docker image
Solution
vi Dockerfile
FROM ubuntu
RUN apt-get update
RUN apt-get install figlet
CMD ["figlet", "hello docker"]
Task: Build docker image with Dockerfile from previous step
Solution
docker image build -t imageformfile:0.1 .
Task: Run docker container with image build in previous step
Solution
docker container run imageformfile:0.1
Task: List all docker images on local system
Solution
docker image ls -a
Task: List all all changes made to docker image
Use image from previous step
Solution
docker image history <image ID>
Update you docker image with 0.2
Solution
vi Dockerfile
CMD ["figlet", "hello docker 0.2"]
TasK: Build docker image with updated Dockerfile from previous step
update tag to 0.2
Solution
docker image build -t imageformfile:0.2 .
Task: Run docker container with image build in previous step
Solution
docker container run imageformfile:0.2
Task: Delete all open nodes/instances and close session
- Select the node and click on DELETE
- Repeat same for any other open nodes
- click close session
