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Add DockerProxy field for dynamic proxy configuration #583

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Merged
mtrmac merged 1 commit into from
Jan 9, 2026
+9 −0
Merged

Add DockerProxy field for dynamic proxy configuration #583

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5 changes: 5 additions & 0 deletions image/docker/docker_client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -972,6 +972,11 @@ func (c *dockerClient) detectPropertiesHelper(ctx context.Context) error {
if c.sys != nil && c.sys.DockerProxyURL != nil {
tr.Proxy = http.ProxyURL(c.sys.DockerProxyURL)
}
if c.sys != nil && c.sys.DockerProxy != nil {
tr.Proxy = func(request *http.Request) (*url.URL, error) {
return c.sys.DockerProxy(request.URL)
}
}
c.client = &http.Client{Transport: tr}

ping := func(scheme string) error {
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4 changes: 4 additions & 0 deletions image/types/types.go
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Expand Up @@ -668,6 +668,10 @@ type SystemContext struct {
DockerRegistryPushPrecomputeDigests bool
// DockerProxyURL specifies proxy configuration schema (like socks5://username:password@ip:port)
DockerProxyURL *url.URL
// DockerProxy is a function that determines the proxy URL for a given request URL.
// If set, this takes precedence over DockerProxyURL. The function should return the proxy URL to use,
// or nil if no proxy should be used for the given request.
DockerProxy func(reqURL *url.URL) (*url.URL, error)

// === docker/daemon.Transport overrides ===
// A directory containing a CA certificate (ending with ".crt"),
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