diff --git a/rust-bindings/rust/src/constants.rs b/rust-bindings/rust/src/constants.rs
new file mode 100644
index 00000000..6586e7b6
--- /dev/null
+++ b/rust-bindings/rust/src/constants.rs
@@ -0,0 +1,3 @@
+/// Metadata key corresponding to the Docker/OCI `CMD` verb.
+/// <https://github.com/opencontainers/image-spec/blob/main/config.md>
+pub const COMMIT_META_CONTAINER_CMD: &str = "ostree.container-cmd";
diff --git a/rust-bindings/rust/src/lib.rs b/rust-bindings/rust/src/lib.rs
index a1ba65e0..fece5206 100644
--- a/rust-bindings/rust/src/lib.rs
+++ b/rust-bindings/rust/src/lib.rs
@@ -38,6 +38,9 @@ pub use crate::core::*;
 mod sysroot;
 pub use crate::sysroot::*;
 
+mod constants;
+pub use constants::*;
+
 #[cfg(any(feature = "v2018_6", feature = "dox"))]
 mod collection_ref;
 #[cfg(any(feature = "v2018_6", feature = "dox"))]