Boot image download

#!/usr/bin/env bash

set -eu

FILE="$IMG/boot.img"

rm -f "$FILE"

TMP="/boot.img"

rm -f "$TMP"

echo "Downloading ${BOOT}..."

# Check if running with interactive TTY or redirected to docker log

if [ -t 1 ]; then

  wget "${BOOT}" -O "$FILE".tmp -q --no-check-certificate --show-progress

  wget "$BOOT" -O "$TMP" -q --no-check-certificate --show-progress --progress=bar:noscroll

else

  wget "${BOOT}" -O "$FILE".tmp -q --no-check-certificate --show-progress --progress=dot:giga

  wget "$BOOT" -O "$TMP" -q --no-check-certificate --show-progress --progress=dot:giga

fi

[ ! -f "$FILE".tmp ] && echo "Failed to download ${BOOT}" && exit 61

[ ! -f "$TMP" ] && echo "Failed to download ${BOOT}" && exit 61

FILE="$IMG/boot.img"

mv -f "$FILE".tmp "$FILE"

mv -f "$TMP" "$FILE"