[antithesis] Enable custom plugin dir for subnet-evm

tests/antithesis/compose.go

@@ -61,9 +61,27 @@ func GenerateComposeConfig(network *tmpnet.Network, baseImageName string) error
 			return fmt.Errorf("failed to get bootstrap volume path: %w", err)
 		}
 
+		// Save the plugin dir for use with compose configuration and remove it from flags so pluginDir can
+		// be used for the db-initialization bootstrap.
+		//
+		// TODO(marun) Separate bootstrap configuration from runtime configuration to avoid having to do this
+		pluginDirForCompose, err := network.GetPluginDir()
+		if err != nil {
+			return fmt.Errorf("failed to get plugin dir: %w", err)
+		}
+		delete(network.DefaultFlags, config.PluginDirKey)
+
 		if err := initBootstrapDB(network, avalancheGoPath, pluginDir, bootstrapVolumePath); err != nil {
 			return fmt.Errorf("failed to initialize db volumes: %w", err)
 		}
+
+		if len(pluginDirForCompose) > 0 {
+			// Restore the plugin dir
+			network.DefaultFlags[config.PluginDirKey] = pluginDirForCompose
+		} else {
+			// Ensure the plugin dir is not provided so that the default is used
+			delete(network.DefaultFlags, config.PluginDirKey)
+		}
 	}
 
 	nodeImageName := fmt.Sprintf("%s-node:%s", baseImageName, imageTag)
@@ -160,6 +178,15 @@ func newComposeProject(network *tmpnet.Network, nodeImageName string, workloadIm
 			config.StakingSignerKeyContentKey: signerKey,
 		}
 
+		// Set a non-default plugin dir if provided
+		pluginDir, err := network.GetPluginDir()
+		if err != nil {
+			return nil, err
+		}
+		if len(pluginDir) > 0 {
+			env[config.PluginDirKey] = pluginDir
+		}
+
 		// Apply configuration appropriate to a test network
 		for k, v := range tmpnet.DefaultTestFlags() {
 			switch value := v.(type) {

tests/fixture/tmpnet/network.go

@@ -289,7 +289,7 @@ func (n *Network) Create(rootDir string) error {
 	n.Dir = canonicalDir
 
 	// Ensure the existence of the plugin directory or nodes won't be able to start.
-	pluginDir, err := n.getPluginDir()
+	pluginDir, err := n.GetPluginDir()
 	if err != nil {
 		return err
 	}
@@ -463,7 +463,7 @@ func (n *Network) Bootstrap(ctx context.Context, w io.Writer) error {
 func (n *Network) StartNode(ctx context.Context, w io.Writer, node *Node) error {
 	// This check is duplicative for a network that is starting, but ensures
 	// that individual node start/restart won't fail due to missing binaries.
-	pluginDir, err := n.getPluginDir()
+	pluginDir, err := n.GetPluginDir()
 	if err != nil {
 		return err
 	}
@@ -877,7 +877,7 @@ func (n *Network) GetNetworkID() uint32 {
 	return n.NetworkID
 }
 
-func (n *Network) getPluginDir() (string, error) {
+func (n *Network) GetPluginDir() (string, error) {
 	return n.DefaultFlags.GetStringVal(config.PluginDirKey)
 }