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distribution: Add text/html and application/json as image mediatypes 

As noted by #30083, the new strict checking of mediatypes misses some
cases where earlier bugs caused nonstandard mediatypes to be stored in
manifests. Two of the known cases are text/html and application/json,
which were returned by certain registries and stored by earlier versions
of Docker. Add special cases for text/html and application/json.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
(cherry picked from commit a215e15cb1)
Signed-off-by: Victor Vieux <vieux@docker.com>
This commit is contained in:
Aaron Lehmann 2017-01-18 18:19:12 -08:00 committed by Victor Vieux
parent 880c12df7d
commit 37be2d4e9b
1 changed files with 4 additions and 0 deletions
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4
distribution/registry.go
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@ -23,7 +23,11 @@ import (
var ImageTypes = []string{
schema2.MediaTypeImageConfig,
// Handle unexpected values from https://github.com/docker/distribution/issues/1621
// (see also https://github.com/docker/docker/issues/22378,
// https://github.com/docker/docker/issues/30083)
"application/octet-stream",
"application/json",
"text/html",
// Treat defaulted values as images, newer types cannot be implied
"",
}