Скачать или смотреть Running Docker Images with Arguments for Spring Boot Applications

Learn how to effectively pass arguments while running Docker images for your Spring Boot applications. This guide will help you troubleshoot and set up your containerized environment seamlessly.
---
This video is based on the question https://stackoverflow.com/q/63057324/ asked by the user 'Sagar Gangwal' ( https://stackoverflow.com/u/5809720/ ) and on the answer https://stackoverflow.com/a/63100242/ provided by the user 'Sagar Gangwal' ( https://stackoverflow.com/u/5809720/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Running docker image with argument

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Running Docker Images with Arguments for Spring Boot Applications

In today's microservices architecture, deploying applications in containers using Docker has become increasingly common. However, many developers encounter challenges when transitioning their workflows from IDEs like IntelliJ to Docker. One frequent issue is passing the necessary runtime arguments when starting a Docker container that runs a Spring Boot application. In this post, we will explore how to overcome this hurdle and ensure that your application runs smoothly within a Docker container.

Understanding the Problem

You're successfully running your Spring Boot application directly from IntelliJ with specific JVM arguments, but when it comes to running that application as a Docker container, you're unsure how to pass those arguments. In this case, the required argument is:

[[See Video to Reveal this Text or Code Snippet]]

Your initial Docker setup appears to be working, but without the ability to pass the necessary arguments, you run into issues. Let’s examine how to integrate these arguments into your Docker setup effectively.

The Solution

Update Your Dockerfile

First, let’s modify your Dockerfile to correctly include the argument for the configuration directory:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of Changes:

We added -DCONFIG_DIR=/shareddata as an argument directly into the ENTRYPOINT command. This way, when the container starts, it knows which configuration directory to use.

Running the Docker Image

Next, when you run your Docker image, you need to ensure that the configuration directory is correctly mapped. Use the following command:

[[See Video to Reveal this Text or Code Snippet]]

Key Components of the Docker Command:

-p 8091:8091: Maps port 8091 on your host machine to port 8091 in the container.

--mount type=bind,source=/c/Users/lenovo/data,target=/shareddata: Binds the directory on your host (where your configuration files are located) to /shareddata in the container.

Result

By implementing these changes, the Docker container should now be able to access your configuration files properly and start the Spring Boot application with the specified argument.

Conclusion

Dockerizing applications can sometimes bring about unexpected challenges, especially when specific runtime configurations are needed. By making careful adjustments to your Dockerfile and executing the container with the right mounting options, you can ensure your Spring Boot application runs with all the parameters it needs to function correctly.

If you encounter further issues or have any questions, feel free to reach out and share your experiences; there’s a strong community ready to help solve these common challenges.