This post has an example of extending the "entrypoint" functionality of the container through the use of a derived image:
If you just need to ensure additional packages are baked into the image, a Dockerfile
like below would probably suffice (since the upstream uses Ubuntu, we'll be using apt
as the package manager):
ARG IGNITION_VERSION="8.1.15"
FROM inductiveautomation/ignition:${IGNITION_VERSION}
RUN apt-get update && \
DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
git && \
rm -rf /var/lib/apt/lists/*
Let me know if you need help building a derived image!