docker inspect --format .NetworkSettings.Ports doesn't work in Windows

[emzeidan]

Hi team,

I am a Support Engineer from Atlassian and I'm working with a customer on an issue.

The following docker inspect command consistently does not seem to work on Windows:
docker.exe inspect --format='{{(index (index .NetworkSettings.Ports "3000/tcp") 0).HostPort}}' $INSTANCE_ID.

The command returns the following error:

Template parsing error: template: :1: unexpected "/" in operand

In docker-archive/toolbox#433, there was a suggestion to switch the quotes from single to double, but that does not work, returning:

Template parsing error: template: :1: malformed character constant: '3000/tcp'

The issue was tested on CentOS and it does work there.

I apologize if this is a duplicate issue, I was unable to find an existing one.

Thanks in advance!

[emzeidan]

Hi team, a quick update from our side. From our testing, it looks like escaping the internal quotes works:
docker.exe inspect --format="{{(index (index .NetworkSettings.Ports \"3000/tcp\") 0).HostPort}}" $INSTANCE_ID

Thanks!

[thaJeztah]

Looks like you found the error, so I'll close

[573]

What should work as well is:

docker.exe inspect --format '{{(index (index .NetworkSettings.Ports "3000/tcp") 0).HostPort}}' $INSTANCE_ID