miniwdl udocker-in-docker PoC

Dockerfile

FROM ubuntu:20.04
RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
    wget curl python3-pip python-is-python3
RUN pip3 install --system miniwdl==1.4.2

ENV UDOCKER_VERSION=1.3.1
WORKDIR /usr/local
RUN wget -nv https://github.com/indigo-dc/udocker/releases/download/v${UDOCKER_VERSION}/udocker-${UDOCKER_VERSION}.tar.gz \
    && tar zxf udocker-${UDOCKER_VERSION}.tar.gz \
    && rm udocker-${UDOCKER_VERSION}.tar.gz
ENV PATH=/usr/local/udocker:$PATH
RUN udocker --allow-root run --nobanner --rm ubuntu:20.04 cat /etc/issue

WORKDIR /mnt
ENV MINIWDL__SCHEDULER__CONTAINER_BACKEND=udocker
CMD miniwdl run_self_test