attach-compose.sh

# Attach a volume to a service using a set of clever defaults
#
# usage:
# attach-compose.sh <service> <path>
# attach-compose.sh --no-cmd <service> <path>

function _compose {
  local flags=()

  [[ -f docker-compose.yml ]] && \
      flags+=("-f docker-compose.yml")

  [[ -f docker-compose.override.yml ]] && \
      flags+=("-f docker-compose.override.yml")

  docker-compose ${flags[@]} $@
}

function _attach_compose {
    local service=$1
    local path=$(realpath $2)
    local image=$(_compose images $service -q)
    local workingdir=$(docker inspect $image -f '{{ .Config.WorkingDir }}')

cat << EOF
  services:
    $1:
      command: tail -f /dev/null
      volumes:
      - ${path}:${workingdir}/$(basename ${path})
EOF
}

function attach_compose {
    local service=$1; local path=$2; shift 2
    _compose -f <(_attach_compose $service $path) $@
}

attach_compose $@