[7.86.0] environment variable is ignored.

[sammy44nts]

Before 7.86.0 version, the image used the NO_PROXY and no_proxy environment variable. It does not work anymore since 7.86.0 version.

[lenaing]

Hello,

Let me add more context :)

This works :

$ docker run -ti -e https_proxy="http://proxy.example.com:3128/" -e no_proxy=".example.com" curlimages/curl -v "https://something.example.com/"
* Uses proxy env variable no_proxy == '.example.com'
*   Trying A.B.C.D:443...
* Connected to something.example.com (A.B.C.D) port 443 (#0)

This doesn't work anymore (note that anything can be appended and also fails) :

$ docker run -ti -e https_proxy="http://proxy.example.com:3128/" -e no_proxy=".example.com,127.0.0.1" curlimages/curl -v "https://something.example.com/"
* Uses proxy env variable no_proxy == '.example.com,127.0.0.1'
* Uses proxy env variable https_proxy == 'http://proxy.example.com:3128/'
*   Trying E.F.G.H:3128...
* Connected to (nil) (E.F.G.H) port 3128 (#0)
* allocate connect buffer
* Establish HTTP proxy tunnel to something.example.com:443
> CONNECT something.example.com:443 HTTP/1.1

This works (Using 7.83.1 from Alpine's repositories) :

docker run -ti -e https_proxy="http://proxy.example.com:3128/" -e no_proxy=".example.com,127.0.0.1" alpine:3.16.2
/ # apk update && apk add curl
...
(1/5) Installing ca-certificates (20220614-r0)
(2/5) Installing brotli-libs (1.0.9-r6)
(3/5) Installing nghttp2-libs (1.47.0-r0)
(4/5) Installing libcurl (7.83.1-r4)
(5/5) Installing curl (7.83.1-r4)
...
/ # curl -v https://something.example.com
* Uses proxy env variable no_proxy == '.example.com,127.0.0.1'
*   Trying A.B.C.D:443...
* Connected to something.example.com (A.B.C.D) port 443 (#0)

The previous docker release (7.85.0) works as expected :

$ docker run -ti -e https_proxy="http://proxy.example.com:3128/" -e no_proxy=".example.com,127.0.0.1" curlimages/curl:7.85.0 -v "https://something.example.com/"
* Uses proxy env variable no_proxy == '.example.com,127.0.0.1'
*   Trying A.B.C.D:443...
* Connected to something.example.com (A.B.C.D) port 443 (#0)

Kind regards,

[dfandrich]

It sounds like this: curl/curl#9821