docker dockerfile error – standard_init_linux.go:211: exec user process caused “exec format error” is an error which occurs sometimes when you build a docker container on a host machine while both have different architectures, the error can also have other causes.
In today’s article I am going to present a set of possible solutions. In order to deal with a confusing error and explain why it takes place.
Exploring the docker dockerfile error – standard_init_linux.go:211: exec user process caused “exec format error”
This is an error which occurs sometimes when you build a docker container on a host machine while both have different architectures, the error can also have other causes.
Do not mix between errors. Make sure the error message looks like the error message bellow after double checking.
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exec user process caused "exec format error"
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With the methods bellow I want to help you solve this problem which a lot of developers find simple but unexpected.
Solution 1 : Use the correct shebang in your .py file
When your yaml file looks like this.
#
...
.
command: [/app/myfile.py]
.
...
#
The myfile.py file should contain the following shebang
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#!/usr/bin/env python
#
Or this one
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#!/usr/bin/env python3
#
You should also do this :
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RUN chmod +x /app/myfile.py
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In Dockerfile.
If this method does not work, please try the following method because its very important.
Solution 2 : Compile the docker image for the correct platform
Sometimes, the root of the problem is building a docker container image on a host machine which has a different architecture.
For example, your host is a ODROID-H2+ and you are running an arm container on it.
Or, your host is a Raspberry Pi and you are running a container with x86-64 architecture on it.
The simplest fix here is to run a docker container which has the same architecture as your host machine.
To do that, you should use docker build and preferably build for different platforms, like in the example bellow.
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docker build --platform linux/amd64,linux/arm64 -t registry.gitlab.com/group/project:1.0-amd64 ./
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You can also use –platform linux/amd64
This should be enough to get rid of the error for good. Thank you for reading and reaching the end of this blog post.
Summing-up :
We arrived at the end of this quest to solve this annoying error, I hope me sharing my experience with you helped, I hope the other solutions helped, If you like this website support us on Kofi and keep browsing, thank you.
Thank you for reading, keep coding and cheers. If you want to learn more about Python, please check out the Python Documentation : https://docs.python.org/3/