Resolving the ERROR: page not found in Docker Compose

Encountering a `page not found` error while running Docker Compose? Discover the common causes and how to fix them in this detailed guide.
---

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: Docker compose why do i get "ERROR : page not found"?

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Resolving the ERROR: page not found in Docker Compose: A Quick Guide

Docker Compose is a powerful tool that allows developers to define and manage multi-container Docker applications. However, it’s not uncommon to encounter errors that can leave you scratching your head. One such error is the frustrating ERROR: page not found. In this guide, we’ll explore why this error occurs and how you can resolve it effectively.

Understanding the Problem

When running the docker-compose up command, some users have reported seeing the error message:

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

In verbose mode, it may also show:

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

This indicates that Docker Compose is having trouble locating the specified image or service. Even if all images are suppose to be available locally, issues can still arise during the start-up phase.

Common Causes of the Error

Newline Characters: One of the most common culprits for this error is the presence of unexpected newline characters in the image versioning variable. When the command to fetch the version for an image includes those newline (or escape) characters, it can lead to Docker Compose attempting to access a malformed URL.

Docker Environment: Docker configurations could vary between different machines. This means that scripts which work on one computer may not function properly on another, which could be due to environmental variances, missing images, or differences in configuration files.

Incorrect Image Name or Tag: While it may be tempting to assume your image names are perfect, a small typo or incorrect tag can result in Docker Compose being unable to find the image.

Solution Steps to Fix the Error

Step 1: Check the Versioning Variables

Focus on ensuring the commands that define your image versions do not include trailing newline characters. In your case, you’ll want to validate this line:

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

Run this command on your terminal and inspect the output.

You should see the expected version without any additional newline characters.

Step 2: Use Shell Utilities

If the output of the command includes an unexpected newline character, you can remove it using tr or similar commands. For example:

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

This will strip away any newline characters from your version string.

Step 3: Validate Docker Configuration

Ensure that your Docker environment is set up correctly and matches any working environments.

Step 4: Run Docker Compose

Now, try running your Docker Compose script again:

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

Monitor the output closely for further errors or confirmation that your services are starting correctly.

Conclusion

Encountering the ERROR: page not found issue in Docker Compose can be confusing, but with careful examination of version variables, proper configuration, and validation of available images, you can resolve it effectively. Always keep in mind that differences between environments can lead to unique tension points and it’s critical to check for any discrepancies when troubleshooting.

By following the above steps, you should be able to get your Docker services up and running without further issues. Happy coding!