port build to gh actions (#204)

* port build to gh actions

* attempt 2: trip hook registration

* hooked to pushes

* gh actions badge

* build cache

* gate at job level

* fix badge merge

* populate cache after checkout

* work now cache later

1 files changed, 1 insertions, 1 deletions

diff --git a/src/builder.rs b/src/builder.rs
index bf7381f..35fccb9 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -676,7 +676,7 @@ impl ContainerOptionsBuilder {
         // Replicate the port bindings over to the exposed ports config
         let mut exposed_ports: HashMap<String, Value> = HashMap::new();
         let empty_config: HashMap<String, Value> = HashMap::new();
-        for (key, _) in &port_bindings {
+        for key in port_bindings.keys() {
             exposed_ports.insert(key.to_string(), json!(empty_config));
         }