How to see log in docker with python api?

Question

When I build a docker image with command line:

docker build -t x .

I can see the process log in terminal.

But with the python API, it doesnt't show anything.

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import docker
import os

route = os.path.dirname(os.path.abspath(__file__))

client = docker.from_env()

client.images.build(
    path=route,
    tag="al3x609/nvnc:latest",
    rm=True
)

How can I see it in realtime?

Simone Zabberoni · Accepted Answer · 2018-05-06 19:39:42Z

1

According to the API the build returns:

Returns: The first item is the Image object for the image that was build. The second item is a generator of the build logs as JSON-decoded objects

Try something like:

(imageObj, buildlog) = client.images.build(
   [...]

Then you can iterate throuhg buildlog:

for logline in buildlog:
    print logline

answered May 6, 2018 at 19:39

Simone Zabberoni

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1 Comment

d56 Over a year ago

Is it possible to see the logs in the real time? client.images.build is blocking so only when it is done (can take a long time to build an image) can I print out the logs...

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