Convert Canon CR2 to PNG

Dockerfile

FROM ubuntu:xenial

ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update
RUN apt-get install -y --no-install-recommends ufraw-batch
WORKDIR /app
VOLUME ["/app/data"]
COPY *.CR2 /app/data/
ENTRYPOINT [ "bash" ]

# 1. docker build . -t ufrawb
# 2. docker run -it ufrawb
# 3. ufraw-batch --out-type png ./data/*.CR2
# 4. docker cp boring_lamport:/app/data/IMG_2837.png ./
# OPTIONA ENTRYPOINT [ "ufraw-batch", "--out-type", "png", "./data/*.CR2" ]