Publishing a web API to Docker

Docker is a tool used to create, deploy, and run applications by using containers. They work like VMs, but are more lightweight and use the host machine to provide better performance.

Note

To understand more about Docker, read the article What is Docker? found at https://www.docker.com/what-docker. Docker can be installed on your machine by following the appropriate steps for your machine, found at https://www.docker.com/products/docker. To use Docker, your machine should support hardware virtualization.

Once Docker is installed on the machine, go through the following steps to build a PacktContactsAPI Docker image and run it on a Docker container:

1. Right-click on the project name and go to Add | Docker Support to create the Docker file.
2. In the PacktContacts project, create Dockerfile and copy the following code:

        FROM microsoft/aspnetcore: 2.0 
        ENTRYPOINT ["dotnet", "PacktContacts.dll"] 
        ARG source=.
        WORKDIR /app 
        EXPOSE 80...