diff --git a/pkg/action/runtime.container.go b/pkg/action/runtime.container.go
index bc8ae57..4769c2e 100644
--- a/pkg/action/runtime.container.go
+++ b/pkg/action/runtime.container.go
@@ -117,6 +117,7 @@ func (c *runtimeContainer) GetFlags() *FlagsGroup {
 				Title:       "Remote copy back",
 				Description: "Copies the working directory back from the container. Works only if the runtime is remote.",
 				Type:        jsonschema.Boolean,
+				Default:     false,
 			},
 			&DefParameter{
 				Name:        containerFlagRemoveImage,
@@ -161,7 +162,8 @@ func (c *runtimeContainer) ValidateInput(input *Input) error {
 	}
 
 	// early peak for an exec flag.
-	if c.exec {
+	exec := input.GetFlagInGroup(c.flags.GetName(), containerFlagExec)
+	if exec != nil && exec.(bool) {
 		// Mark input as validated because arguments are passed directly to exec.
 		input.SetValidated(true)
 	}
@@ -188,7 +190,7 @@ func (c *runtimeContainer) SetFlags(input *Input) error {
 		c.noCache = nc.(bool)
 	}
 
-	if e, ok := flags[containerFlagEntrypoint]; ok {
+	if e, ok := flags[containerFlagEntrypoint]; ok && e != "" {
 		c.entrypointSet = true
 		c.entrypoint = e.(string)
 	}
diff --git a/plugins/actionscobra/cobra.go b/plugins/actionscobra/cobra.go
index bafe5c2..68f2f22 100644
--- a/plugins/actionscobra/cobra.go
+++ b/plugins/actionscobra/cobra.go
@@ -35,8 +35,12 @@ func CobraImpl(a *action.Action, streams launchr.Streams, manager action.Manager
 			if rt, ok := a.Runtime().(action.RuntimeFlags); ok {
 				runtimeFlagsGroup := rt.GetFlags()
 				runOpts = derefOpts(filterChangedFlags(cmd, runOpts))
-				for k, v := range runOpts {
-					input.SetFlagInGroup(runtimeFlagsGroup.GetName(), k, v)
+				for flag, defaultValue := range runtimeFlagsGroup.GetAll() {
+					value := defaultValue
+					if runOpts[flag] != nil {
+						value = runOpts[flag]
+					}
+					input.SetFlagInGroup(runtimeFlagsGroup.GetName(), flag, value)
 				}
 			}