How to run rsspls in a Docker container?

[YanisKyr]

Is it possible to run rsspls in a Docker container?

[wezm]

Yes it's possible, I run it in Docker myself via docker-compose. This is the Dockerfile I use (note that the base image is not public but can be substituted with one of the alpine images on Docker Hub):

FROM wezm-alpine:3.20.3

# UID needs to match owner of /home/rsspls/feeds volume
ARG PUID=1000
ARG PGID=1000
ARG USER=rsspls

RUN addgroup -g ${PGID} ${USER} && \
    adduser -D -u ${PUID} -G ${USER} -h /home/${USER} -D ${USER}

ARG RSSPLS_VERSION=0.9.0

RUN cd /usr/local/bin && \
    wget -O - https://releases.wezm.net/rsspls/${RSSPLS_VERSION}/rsspls-${RSSPLS_VERSION}-x86_64-unknown-linux-musl.tar.gz | tar zxf - && \
    mkdir /home/${USER}/feeds && \
    chown ${USER}:${USER} /home/${USER}/feeds

COPY ./entrypoint.sh /home/${USER}/entrypoint.sh

WORKDIR /home/${USER}

USER ${USER}

VOLUME ["/home/rsspls/feeds"]
ENTRYPOINT ["./entrypoint.sh"]

The entrypoint.sh script is:

#!/bin/sh

set -e

trap 'exit' TERM INT

while true; do
  rsspls --config /etc/rsspls.toml
  sleep 1036800 # 12 hours
done

The docker-compose.yaml section for rsspls looks like this. Note that it supplies the config file via a volume. Also not that the image mentioned there is not public either.

  rsspls:
    image: 791569612186.dkr.ecr.ap-southeast-2.amazonaws.com/rsspls
    volumes:
      - ./rsspls/rsspls.toml:/etc/rsspls.toml:ro
      - ./volumes/www/rsspls.wezm.net:/home/rsspls/feeds
    restart: unless-stopped

[YanisKyr]

Thanks for the quick reply!

In the containers I'm running so far, I never had to do Dockerfile and entrypoint.sh - could you share a bit more info on them please?

[wezm]

The Dockerfile describes how to build a docker image. In a directory containing the Dockerfile and engrypoint script you run something like docker build -t rsspls . to build the image and tag it with the name rsspls. After the image is built you can use it locally or push it to a container repository for other machines to pull and use.

https://stackify.com/docker-build-a-beginners-guide-to-building-docker-images/

[YanisKyr]

Oh, ok, interesting, I'll try it.

Would it be for you to post the ready to go image by the way?

[wezm]

I have not opted to publish docker images of my projects so far because I feel that there are many different ways to build an image like this as well as different base images to use (or none at all). I publish the binaries so that they're easy to install into whatever environment folks are using, including docker. But I'll keep it in mind. Especially if I get other requests for the same.