http-proxy: improve docs

Signed-off-by: James Cassell <code@james.cassell.me>

1 files changed, 11 insertions, 1 deletions

diff --git a/docs/podman-run.1.md b/docs/podman-run.1.md
index a0c17652a..5bc32ad52 100644
--- a/docs/podman-run.1.md
+++ b/docs/podman-run.1.md
@@ -257,7 +257,17 @@ By default proxy environment variables are passed into the container if set
 for the podman process.  This can be disabled by setting the `--http-proxy`
 option to `false`.  The environment variables passed in include `http_proxy`,
 `https_proxy`, `ftp_proxy`, `no_proxy`, and also the upper case versions of
-those.
+those.  This option is only needed when the host system must use a proxy but
+the container should not use any proxy.  Proxy environment variables specified
+for the container in any other way will override the values that would have
+been passed thru from the host.  (Other ways to specify the proxy for the
+container include passing the values with the `--env` flag, or hardcoding the
+proxy environment at container build time.)
+
+For example, to disable passing these environment variables from host to
+container:
+
+`--http-proxy=false`
 
 Defaults to `true`