Show Images Ordered by Size¶

docker image ls --format '{{.Size}}\t{{.ID}}\t{{.Repository}}:{{.Tag}}' \
  | sort -t $'\t' -k1,1h

Purge Old Images¶

PURGE_REPO="hub.docker.io"

docker image ls --format '{{.Size}}\t{{.ID}}\t{{.Repository}}:{{.Tag}}' \
  | grep -E $'\t'"${PURGE_REPO}/" \
  | grep -E ':latest$' \
  | sort -t $'\t' -k1,1h \
  | while IFS=$'\t' read size id name; do
    echo "=== ${name} ===";
    docker image ls "${name%:*}" --format '{{.Size}}\t{{.ID}}\t{{.Repository}}:{{.Tag}}' \
      | grep -v "${id}" \
      | sort -t $'\t' -k1,1h \
      | awk '{print $3}' \
      | xargs -rt docker image rm;
  done