generate: container: Add {create,remove}_environment wrappers

Add {create,remove}_environment wrappers to the Container class, so that
the generate script can access them.

Signed-off-by: Enno Tensing <tenno@suij.in>

generate/container.py

@@ -467,6 +467,12 @@ class Container:
             secrets += secret.create()
         return secrets
 
+    def create_environment(self) -> str:
+        """Wrap self.env.create()."""
+        if self.env is None:
+            return ""
+        return self.env.create()
+
     def create_container(self) -> str:
         """Create podman container."""
         cmd = ""
@@ -541,3 +547,9 @@ class Container:
         for secret in self.secrets:
             secrets += secret.remove()
         return secrets
+
+    def remove_environment(self) -> str:
+        """Wrap self.env.remove()."""
+        if self.env is None:
+            return ""
+        return self.env.remove()