Using docker to get latest btrfs-progs

docker-compose.yml

version: "2"
services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    devices:
      # Which disk(s) to expose to docker...
      - "/dev/md1:/dev/md1"

# Dockerfile
# FROM debian:unstable-slim
#
# RUN apt-get update \
#     && apt-get install -y --no-install-recommends btrfs-progs bash coreutils \
#     && rm -rf /var/lib/apt/lists/*
#
# Example usage 1:
# docker-compose run --rm app btrfs version
# btrfs-progs v5.7
#
# Example usage 2:
# docker-compose run --rm app btrfs check -p /dev/md1

Dockerfile contents:

FROM debian:unstable-slim

RUN apt-get update \
    && apt-get install -y --no-install-recommends btrfs-progs bash coreutils \
    && rm -rf /var/lib/apt/lists/*