ADD from url fails with 'invalid not-modified ETag' #905
Description
Build fails at:
ADD https://getcomposer.org/composer.phar /usr/local/bin/composer
Log:
=> [1/17] FROM docker.io/library/php:7.3-fpm@sha256:cf8e94d24d94329f13bcd430ae586f80278247e1c43e5f8b3d52c4ab16d2464f 0.0s
=> ERROR https://getcomposer.org/composer.phar 0.3s
=> [internal] load build context 0.0s
------
> https://getcomposer.org/composer.phar:
------
invalid not-modified ETag: "5c912760-1d3e0e"
I'm wondering if this is related to #835 but thought worth reporting so it can also be tested.
The etag seems to work just fine, i.e. curl -I -H 'if-none-match: "5c912760-1d3e0e"' https://getcomposer.org/composer.phar returns 304.