railway: add page (#9488)

pages/common/railway.md

@@ -0,0 +1,28 @@
+# railway
+
+> Connect code to a Railway project from the command line.
+> More information: <https://railway.app/>.
+
+- Login to a Railway account:
+
+`railway login`
+
+- Link to an existing Project under a Railway account or team:
+
+`railway link {{projectId}}`
+
+- Create a new project directly from the command line:
+
+`railway init`
+
+- Run a local command using variables from the active environment:
+
+`railway run {{cmd}}`
+
+- Deploy the linked project directory (if running from a subdirectory, the project root is still deployed):
+
+`railway up`
+
+- Open an interactive shell to a database:
+
+`railway connect`