build: docker image and compose file

Dockerfile, script entrypoint, docker-compose.yml minimaliste.

Dockerfile

@@ -50,6 +50,7 @@ COPY --from=build /target/release/lc-core /usr/local/bin/lc-core
 COPY docker-entrypoint /usr/local/bin/
 
 # Configuration
-EXPOSE 9944
+# rpc, rpc-ws, p2p, telemetry
+EXPOSE 9933 9944 30333 9615
 VOLUME /var/lib/lc-core
 ENTRYPOINT ["docker-entrypoint"]