Situation:

There is currently no way to use the docker-java library to connect to docker over TCP/HTTPS without using the default hostname verifier.

ApacheDockerHttpClient.Builder.build() eventually calls new SSLConnectionSocketFactory() leading to a default HttpsSupport.getDefaultHostnameVerifier() which requires Subject Alternative Names match the host/IP being used to connect.

Although possibly what many or most people want, this precludes certain use cases.

Target:
ApacheDockerHttpClient construction is flexible enough to support a custom hostname verifier.

Proposal:

Add additional builder methods to ApacheDockerHttpClient.Builder to accept a custom hostname verifier.