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dockerubuntu32bit-64bitdocker-run

Why docker RUN command causes exec error anytime?

I installed docker on Ubuntu 16.04 32 bit system. Then in example DockerFile, when i type RUN command with anything, i get error:

DockerFile:

RUN ls

Then i run build Docker command:

sudo docker build - < Dockerfile

And i receive at this line:

---> Running in 1685b032aefd
exec format error
INFO[0000] [8] System error: exec format error

So i want to move forward with this problem. I use 32 bit ubuntu, but installed docker with this trick.

Also i run docker as root, so maybe that may be a reason?

How to properly execute RUN command in docker in my situation? I prefer rather not to change OS.

Solution

  • That error indicates you're trying to run binaries from another architecture. Most likely 64-bit binaries on a 32-bit host.