Wednesday, November 11, 2015

Docker and GLIBC_2.14 not found

Hit a problem today when I was using Docker and Docker-compose to run a Node.js app in a CentOS container. I had done an "npm install" locally and then the docker-compose command had setup the container and copied everything over from my Ubuntu workstation.

Problem was that I was using a couple of Node.js modules that used native code. So the Ubuntu compile of those modules was getting copied to the CentOS container and when CentOS was trying to run them it was giving me an error about "GLIBC_2.14 not found" because it hadn't compiled those modules.

I feel that a good practise for almost any Docker setup is to have a .dockerignore file which excludes the "node_modules" folder.

This is what my .dockerignore file looks like:


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