Document the dockerhub registry.

README.md

@@ -318,6 +318,13 @@ used, ensure that they are limited in scope, just as you would for
 the base directory.
 
 ### INSTALLATION
+To pull the Docker image:
+
+
+```go
+docker pull uplex/http-faccess[:tag]
+```
+
 Building the binary requires an installation of the gogitversion
 tool. Re-building README.md requires goreadme. See the links in SEE
 ALSO below.
@@ -334,6 +341,8 @@ See the Makefile for additional targets, useful for development.
 ### SEE ALSO
 * source code repository: <a href="https://code.uplex.de/testing/http-faccess">https://code.uplex.de/testing/http-faccess</a>
 
+* dockerhub registry: <a href="https://hub.docker.com/r/uplex/http-faccess">https://hub.docker.com/r/uplex/http-faccess</a>
+
 * gogitversion: <a href="https://github.com/slimhazard/gogitversion">https://github.com/slimhazard/gogitversion</a>
 
 * goreadme: <a href="https://github.com/dmjones/goreadme">https://github.com/dmjones/goreadme</a>

doc.go

@@ -304,6 +304,10 @@
 //
 // INSTALLATION
 //
+// To pull the Docker image:
+//
+//    docker pull uplex/http-faccess[:tag]
+//
 // Building the binary requires an installation of the gogitversion
 // tool. Re-building README.md requires goreadme. See the links in SEE
 // ALSO below.
@@ -318,6 +322,8 @@
 //
 // * source code repository: https://code.uplex.de/testing/http-faccess
 //
+// * dockerhub registry: https://hub.docker.com/r/uplex/http-faccess
+//
 // * gogitversion: https://github.com/slimhazard/gogitversion
 //
 // * goreadme: https://github.com/dmjones/goreadme