toxcore/other/bootstrap_daemon/docker/update-sha256

#!/usr/bin/env bash

set -eux

docker_build() {
  readarray -t FILES <<<"$(git ls-files)"
  tar c "${FILES[@]}" | docker build -f other/bootstrap_daemon/docker/Dockerfile -t toxchat/bootstrap-node -
}

# Run Docker build once. If it succeeds, we're good.
if docker_build; then
  exit 0
fi

# We're not good. Run it again, but now capture the output.
OUTPUT=$(docker_build || true 2>&1)

if echo "$OUTPUT" | grep '/usr/local/bin/tox-bootstrapd: FAILED'; then
  # This is a checksum warning, so we need to update it.
  IMAGE=$(echo "$OUTPUT" | grep '^ ---> [0-9a-f]*$' | grep -o '[0-9a-f]*$' | tail -n1)
  docker run --rm "$IMAGE" sha256sum /usr/local/bin/tox-bootstrapd >other/bootstrap_daemon/docker/tox-bootstrapd.sha256
fi

# Run once last time to complete the build.
docker_build