Step by step: ASP.NET Core on Docker
This week I have to give an introductory talk on DevOps and Docker and therefore I decided to prepare a simple Step by step: ASP.NET Core on Docker sample.
Assuming you have Docker installed and running, follow these 4 simple steps:
1. Create a dockerfile
On your Docker box create a dockerfile with the following contents
# We use the microsoft/dotnet image as a starting point. FROM microsoft/dotnet # Install git RUN apt-get install git -y # Create a folder to clone our source code RUN mkdir repositories # Set our working folder WORKDIR repositories # Clone the source code RUN git clone https://github.com/cmendible/aspnet-core-helloworld.git # Set our working folder WORKDIR aspnet-core-helloworld/src/dotnetstarter # Expose port 5000 for the application. EXPOSE 5000 # Restore nuget packages RUN dotnet restore # Start the application using dotnet!!! ENTRYPOINT dotnet run
2. Create a docker image
With the dockerfile in place run the following command
sudo docker buildÂ -t hello_world .
Now you have an image named hello_world with all the dependencies and code needed to run the sample.
3. Test the Docker image
To test the Docker image run the following command
docker run -it -p 5000:5000 hello_world
If everything runs as expected you can head to your browser and navigate to http://localhost:5000 and confirm that the application is running!
4. Run the Docker image as a daemon process
Now that you know that everything is working as expected use the following command to run the Docker image as a daemon process
docker run -t -d -p 5000:5000 hello_world
Feel free to logout or close the connection with your Docker box and the application will keep running.
You can get a copy of the docker file here: https://github.com/cmendible/dotnetcore.samples/tree/main/docker.helloworld
Hope it helps!