node: Restore node information from the environment variables.

node/src/command.rs

@@ -29,18 +29,6 @@ impl SubstrateCli for Cli {
         "Joystream Node"
     }
 
-    fn impl_version() -> &'static str {
-        "3.0.0"
-    }
-
-    fn description() -> &'static str {
-        "Joystream substrate node"
-    }
-
-    fn author() -> &'static str {
-        "Joystream contributors"
-    }
-
     fn support_url() -> &'static str {
         "https://www.joystream.org/"
     }
@@ -53,6 +41,18 @@ impl SubstrateCli for Cli {
         "joystream-node"
     }
 
+    fn impl_version() -> &'static str {
+        env!("SUBSTRATE_CLI_IMPL_VERSION")
+    }
+
+    fn description() -> &'static str {
+        env!("CARGO_PKG_DESCRIPTION")
+    }
+
+    fn author() -> &'static str {
+        env!("CARGO_PKG_AUTHORS")
+    }
+
     fn load_spec(&self, id: &str) -> std::result::Result<Box<dyn sc_service::ChainSpec>, String> {
         Ok(match id {
             "dev" => Box::new(chain_spec::Alternative::Development.load()?),