Question on extending the image

[allan-silverstein]

Hi,
After reading the wiki about extending the image, I have a few questions.

1. I'm trying to add the dellos10 napalm driver which entails the following that I think I should be setting up my Dockerfile to extend the image as shown below. This is failing as the command "sudo" fails. How can I get the necessary packages installed so that the pip install of napalm-dellos10 is successful.

FROM netboxcommunity/netbox:latest

RUN sudo apt-get install libffi-dev libssl-dev python-dev python-cffi libxslt1-dev python-pip
RUN pip install napalm-dellos10

2. Once I get this new image successfully built, how exactly do I get netbox-docker to use this new image? Do I just edit the docker-compose.yml file (snippet below) and replace the image name with the new image name I created and then just start up netbox again? Or if I use the docker-compose.override.yml will statements in that file override the contents of docker-compose.yml?

services:
  netbox: &netbox
    image: netboxcommunity/netbox:${VERSION-v3.2-1.6.1

[allan-silverstein]

Ok, finally got this working so I'll document here. First, I was trying to use apt-get (Ubuntu) to install packages but the Netbox image is based off of Alpine Linux so I needed to use "apk add" to add packages. Next, I needed to do bit of research and trial and error to get the equivalent package names for Alpine Linux. Lastly, I needed to run pip using the Netbox venv within the container and not in system installed python. This fooled me at first because when I logged into the Netbox container and issued the "pip list" command, I saw the napalm package so I assumed this is what netbox was using... Wrong. Netbox python environment in the container is /opt/netbox/venv/bin.
Then I was able to build/extend the image with the following docker file.

FROM netboxcommunity/netbox:latest

# Note, the apt-get installation is what's documented for installing dellos01 napalm drivers
# on Ubuntu.  The netbox image is based off of Alpine Linux.
#RUN sudo apt-get install libffi-dev libssl-dev python-dev python-cffi libxslt1-dev python-pip
RUN  apk add --no-cache \
     openssl-dev \
     python3-dev \
     py3-cffi \
     libffi-dev \
     py3-pip \
     libxslt-dev 
RUN /opt/netbox/venv/bin/pip install --upgrade pip
RUN /opt/netbox/venv/bin/pip install napalm-dellos10

The command to build new image (don't forget trailing dot):

sudo docker build -t netbox_v3.2_dellos10:041322 .

After the new image is built, you need to modify the docker-compose.yml file to reflect the new image.

Lastly, stop and then restart Netbox using "docker-compose stop" and then "docker-compose up -d"