Operation not permitted systemctl with docker + systemctl
Dockerfile
FROM centos:7
ENV container docker
VOLUME ["/sys/fs/cgroup"]
RUN yum -y update
RUN yum install -y httpd
RUN systemctl start httpd.service
ADD . /code
WORKDIR /code
docker-compose.yml
version: '2'
services:
web:
privileged: true
build: .
ports:
- "80:80"
volumes:
- .:/code
command
docker-compose build
error:
Step 6 : RUN systemctl start httpd.service ---> Running in 5989c6576ac9 ?[91mFailed to get D-Bus connection: Operation not permitted ?[0m?[31mERROR?[0m: Service 'web' failed to build: The command '/bin/sh -c syste mctl start httpd.service' returned a non-zero code: 1
Obs: running on a windows 7 :(
Any tip?
Answer
As explained in centos docker image repository, Systemd is not active by default. In order to use systemd, you will need to include text similar to the example Dockerfile below:
FROM centos:7
MAINTAINER "you" <[email protected]>
ENV container docker
RUN (cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == systemd-tmpfiles-setup.service ] || rm -f $i; done); \
rm -f /lib/systemd/system/multi-user.target.wants/*;\
rm -f /etc/systemd/system/*.wants/*;\
rm -f /lib/systemd/system/local-fs.target.wants/*; \
rm -f /lib/systemd/system/sockets.target.wants/*udev*; \
rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \
rm -f /lib/systemd/system/basic.target.wants/*;\
rm -f /lib/systemd/system/anaconda.target.wants/*;
VOLUME [ "/sys/fs/cgroup" ]
CMD ["/usr/sbin/init"]
This Dockerfile deletes a number of unit files which might cause issues. From here, you are ready to build your base image.
$ docker build --rm -t local/c7-systemd .
In order to use the systemd enabled base container created above, you will need to change your Dockerfile to:
FROM local/c7-systemd
ENV container docker
VOLUME ["/sys/fs/cgroup"]
RUN yum -y update
RUN yum install -y httpd
RUN systemctl start httpd.service
ADD . /code
WORKDIR /code