Question

How do I keep the STDIN stream open in a container on GCE

Answer 1

You can allocate a buffer for STDIN in the container runtime to keep the STDIN stream open in a container. If this is not set, reads from STDIN in the container always result in EOF.

Along with allocating a pseudo-TTY, keeping the STDIN stream open is necessary for establishing an interactive shell in the container and for the container to receive its standard input from a pipe.

From the console:

1. Go to the VM instances page.

2. Click the Create instance button to create a new instance.

3. Under the Container section, check Deploy container image.

4. Click Advanced container options.

5. Check Allocate a buffer for STDIN.