fix(config): propgate dry run option to docker image

The dry run flag was not being carried into the docker image setup in
the from static method. this cause the verify command to fail in
unexpected ways

lib/docker/image.js

@@ -87,7 +87,7 @@ class Image {
     , quiet: opts.quiet
     , publish: opts.publish
     , platform: opts.platform
-    , dry_run: !!opts.dryRun
+    , dry_run: !!opts.dry_run
     })
     for (const [key, value] of Object.entries(opts.args)) {
       image.arg(key, string.template(value)(vars))