Installing pure-ftpd in docker (Debian wheezy), error 421
debian, docker, ftp, pureftpd
Solution
It seems your host machine does not allow capability switching.
You could modify the `optflags` in the source package for `pure-ftpd` by adding `--without-capabilities`
Steps to add in your Docker file
- apt-get source pure-ftpd
- in the `rules` file, append with sed the `--without-capabilities` options
- use `dpkg-buildpackage -b -uc` to build the package and install it with `dpkg -i`
This should do the trick.
Problem
i'm trying to setup a simple container i docker with pure-ftpd running. But on running `service pure-ftpd start` i get this error: ``` Starting ftp server: Running: /usr/sbin/pure-ftpd -l pam -E -8 UTF-8 -O clf:/var/log/pure-ftpd/transfer.log -u 1000 -B 421 Unable to switch capabilities : Operation not permitted ``` Here's the Dockerfile for testing this: ``` FROM debian:wheezy ENV DEBIAN_FRONTEND noninteractive RUN apt-get -y update RUN apt-get install -y pure-ftpd-common pure-ftpd CMD service pure-ftpd start && \ /bin/bash EXPOSE 21/tcp ``` In this test i'm using debian wheezy, but i've tried with ubuntu too and i get exact the same error. [ Edit ] Working version with this fix is now available here: https://index.docker.io/u/stilliard/pure-ftpd/