[FIXED] Error trying to install Ansible in Jenkins image

Issue

I'm trying to install Ansible in my Jenkins image (this way). This is my Dockerfile:

FROM jenkins

USER root

RUN apt-get install -y software-properties-common
RUN apt-add-repository ppa:ansible/ansible
RUN apt-get update
RUN apt-get install -y ansible

USER jenkins

But when I build the image, I get this error:

W: Failed to fetch http://ppa.launchpad.net/ansible/ansible/ubuntu/dists/jessie/main/binary-amd64/Packages 404 Not Found

E: Some index files failed to download. Thet have been ignored, or old ones used instead.

I have realized that http://ppa.launchpad.net/ansible/ansible/ubuntu/dists/jessie doesn't exist.

Thanks

Solution

From your above link, ansible ppa seems to have support only for ubuntu, so you end up adding a broken ppa. Your docker image jenkins inherits from java:8-jdk which further inherits from buildpack-deps:jessie-scm which inherits buildpack-deps:jessie-curl and that one from debian:jessie

From here

If you are wishing to run the latest released version of Ansible and you are running Red Hat Enterprise Linux (TM), CentOS, Fedora, Debian, or Ubuntu, we recommend using the OS package manager.

This means, if you have your Dockerfile like this

[anovil@ubuntu-anovil docker-ansible-jenkins]$ cat Dockerfile 
FROM jenkins
USER root
RUN apt-get update
RUN apt-get install -y ansible
USER jenkins
[anovil@ubuntu-anovil docker-ansible-jenkins]$

Thats enough and I managed to test this and this works !

[anovil@ubuntu-anovil docker-ansible-jenkins]$ docker build -t jenkins --rm .
Sending build context to Docker daemon 2.048 kB
...
[anovil@ubuntu-anovil docker-ansible-jenkins]$ docker run -d -p 8080:8080 jenkins
e722efecdf7beb462bafaff653b19261268abbd2d56f88334ba6c42d068b2877
[anovil@ubuntu-anovil docker-ansible-jenkins]$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES
e722efecdf7b        jenkins             "/bin/tini -- /usr/lo"   4 minutes ago       Up 4 minutes        0.0.0.0:8080->8080/tcp, 50000/tcp   focused_cray
[anovil@ubuntu-anovil docker-ansible-jenkins]$ 

Let us hear about how this went for you.

Thanks,

Answered By - Maniankara
Answer Checked By - Katrina (JavaFixing Volunteer)