feat: add docker setup

README.md

@@ -62,10 +62,18 @@ todo-mcp tags
 todo-mcp purge
 ```
 
+## Docker
+
+```sh
+docker build -t local/todo-mcp .
+docker run --rm -v todo-mcp-data:/data -e TODO_DB=/data/todos.db local/todo-mcp --help
+```
+
+Data is persisted in the `todo-mcp-data` volume. See [Usage](#usage) for more commands.
+
 ## Claude Setup
 
-todo-mcp ships with an MCP server that lets Claude manage your todos. Add this
-to your Claude MCP config:
+### Native
 
 ```json
 {
@@ -78,5 +86,25 @@ to your Claude MCP config:
 }
 ```
 
+### Docker
+
+Build the image first (see [Docker](#docker)), then add to your Claude MCP config:
+
+```json
+{
+  "mcpServers": {
+    "todo": {
+      "command": "docker",
+      "args": [
+        "run", "-i", "--rm",
+        "-v", "todo-mcp-data:/data",
+        "-e", "TODO_DB=/data/todos.db",
+        "local/todo-mcp", "mcp-serve"
+      ]
+    }
+  }
+}
+```
+
 This gives Claude access to all todo operations — adding, listing, completing,
 editing, removing, and purging.