How to Fix: Docker container entry points complain "cannot execute binary file: Exec format error"

The error 'cannot execute binary file: Exec format error' occurs when Docker container entry points complain about an executable file being in an incorrect format. This issue affects users running Nextcloud via Docker, causing frustration as it prevents them from successfully deploying the application.

This problem can be particularly vexing for users who have tried various solutions without success. However, by following the steps outlined below, you should be able to resolve this issue and get your Nextcloud container up and running smoothly.

🛑 Root Causes of the Error

• The primary reason for this error is due to differences in binary formats between the host system and the Docker image. This can occur when the Docker image is pulled from a repository that uses a different architecture or compilation method than the host system. For example, if you are running an x86_64 host system but pulling an image compiled for arm64.
• An alternative reason could be related to corrupted binaries during the pull process from Docker Hub. This can happen when the Docker client or server has issues with downloading or verifying the integrity of the binary files.

✅ Best Solutions to Fix It

💡 Conclusion

By following these steps, you should be able to resolve the 'cannot execute binary file: Exec format error' issue in your Docker Nextcloud container. Remember to verify your host system architecture matches the image's architecture and check for any corrupted binaries during the pull process.