Connect rpc port 9933 failed if polkadot startup without --rpc-external

Ross Bulat authored Mar 29, 2019 and asynchronous rob committed Mar 29, 2019

Document Limiting Resources for Docker Containers

* update version to 0.3.14 and add --chain alex

- update to latest docker polkadot version - 0.3.14
- add the `--chain alex` argument which is necessary for the Alexander testnet

* add custom node name

add custom node name

* docs: Update Readme for PoC-3

* docs: Fix formatting and update Docker section

* docs: Fix formatting. Start trying to make consistent with Substrate repo

* docs: Move Two-Node example into Hack on Substrate