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Matches found for tag 'Docker': 8

Docker on Debian / Ubuntu not respecting ufw firewall settings exposing ports

9 December 2019 by Peter

Docker bypasses ufw firewall settings and exposes ports to the outside world, a very serious security leak.

Docker containers suddenly using 192.168.0.0/16 instead of 172.17.0.0/16: services lost

27 November 2019 Updated 27 November 2019 by Peter

My Docker applications suddenly could not send mail using the host Postfix MTA. I fixed this by specifying a Docker default address pool, but it is better to do this before deployment.

How to set the timezone when using the Python Alpine Docker image

13 November 2019 by Peter

When using a Python Alpine Docker image we must add the tzdata package before we can set the timezone.

ISPConfig: running a Python Flask Docker container as a jailed Shell User

18 October 2019 Updated 18 October 2019 by Peter

The method described requires you can be root, meaning it is not universal but may be sufficient if you are the system administrator.

Another captcha implementation for Flask and WTForms

4 July 2019 Updated 29 August 2019 by Peter

Let’s burn their deeplearning GPU’s.

Sending mail from a Docker container using ISPConfig3 host Postfix MTA

28 June 2019 Updated 31 August 2019 by Peter

Use the docker0 bridge IP address to connect to Postfix

Reducing the size of a Python application Docker image using Python wheels

10 March 2019 Updated 30 August 2019 by Peter

With Docker multi-stage builds and Python wheels we compile the dependencies in the first stage and install them in the second stage

Python Flask app on Docker in ISPConfig3 with Nginx - Part 1: Minimal app

13 February 2019 Updated 31 August 2019 by Peter

ISPConfig is a great hosting control panel but it does not support Python applications out of the box. This post shows how you can do it using Docker.