feat: add Docker bootstrap for mcpd with auto-migration and seeding

Adds Dockerfile, entrypoint, and server bootstrap so that
`docker compose up` starts postgres, pushes the schema,
seeds default MCP servers, and starts mcpd with all routes wired up.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.dockerignore

@@ -0,0 +1,15 @@
+node_modules
+*/node_modules
+**/node_modules
+dist
+**/dist
+.git
+.taskmaster
+.claude
+*.md
+!pnpm-workspace.yaml
+.env
+.env.*
+deploy/docker-compose.yml
+src/cli
+src/local-proxy