Fix typo in HTTP proxy URL

[mat007]

It’s HTTP here, not HTTPS. Besides the rest of the text has http://proxy.example.com:3128

Proposed changes

Unreleased project version (optional)

Related issues (optional)

[netlify]

✔️ Deploy Preview for docsdocker ready!

🔨 Explore the source changes: b3b2e4f

🔍 Inspect the deploy log: https://app.netlify.com/sites/docsdocker/deploys/618294582a7dc70008f5e982

😎 Browse the preview: https://deploy-preview-13781--docsdocker.netlify.app

[djs55]

There might be a capitalization problem as well:

PS >  docker run -e HTTP_PROXY=http://127.0.0.1:3128 alpine wget http://www.docker.com/
Connecting to www.docker.com (143.204.198.101:80)
Connecting to www.docker.com (143.204.198.101:443)
saving to 'index.html'
index.html           100% |********************************| 98.6k  0:00:00 ETA
'index.html' saved

PS >  docker run -e http_proxy=http://127.0.0.1:3128 alpine wget http://www.docker.com/
Connecting to 127.0.0.1:3128 (127.0.0.1:3128)
wget: can't connect to remote host (127.0.0.1): Connection refused

[mat007]

There might be a capitalization problem as well:

It seems the docs are correct then? It’s HTTP_PROXY?
(Golang supports both but I think the Docker world mostly supports upper case, for some reason…)

[djs55]

@mat007 I should have clarified: I wasn't running a proxy, so "Connection refused" was success :) wget ignored HTTP_PROXY but it respected http_proxy , so I suspect the "standard" capitalization is lower-case.

[mat007]

Oh, right. I see what you mean now.
Yeah there is no real consensus on what the capitalization should be it seems , but if wget only knows about the lowercase version then indeed the example must use that.

I’ll amend, thanks!

[mat007]

Oh wait, the docs actually never mention wget… 🤔

[usha-mandya]

We also have #13786 from Sebastiaan on Proxy settings

[usha-mandya]

LGTM