Intro to Containers

Code demos for the Intro to Containers presentation.

The demos are based on the aspnet-mysql application from this repo.

To learn more about Containers check out the slides.

Build and run the container

To build and run the application in this repo:

1. Download and Install Docker Desktop

2. Build the containers

   # go to the app folder
   $ cd app
   
   # build the container
   $ docker build -t aspnet .
   
   # run the container
   $ docker run -p 80:80 aspnet

   The -t aspnet option tags the image with the aspnet tag. This way we are naming the image, so that we can use it later.

   The -p 80:80 option maps the local port 80 to port 80 in the container.

Push the container to a registry

To push the container to a registry (for example, Docker Hub):

1. Go to Docker Hub and create an account.

2. Build the image again, but this time prefix the tag with your username:

   # go to the app folder
   $ cd app
   
   # build the container and tag it with your username
   docker build -t <username>/aspnet .
   
   # push the container via its tag
   docker push <username>/aspnet

3. Login to Docker Hub with your username and password:

   $ docker login --username <username>
   Password: <enter_password>

4. Push the image:

   docker push <username>/aspnet

5. The image should now be visible in your Docker Hub account: