Add a fixturenet-payments stack (#540)

* Add a fixturenet-payments stack

* Export the WebSocket port in fixturenet-eth-geth service

* Add container to run a go-nitro node

* Add container to deploy Nitro contracts

* Read contract addresses from a volume when running the Nitro node

* Add a service for Nitro reverse payment proxy

* Expose payment proxy endpoint to be accessible from host

* Map nitro node messaging and payment proxy ports to host

* Use container to deploy Nitro contracts in mobymask-v3 stack

* Use a common contract deployment script from mobymask-v3 stack

* Add MobyMask contract deployment and watcher services

* Fixes for contract deployment and watcher scripts

* Add a container and service for mobymask-snap

* Add MobyMask app service

* Add container and service for a ponder app

* Fix ponder setup and update instructions

* Handle review comments

* Use enablepaidrpcmethods flag in reverse payment proxy server

* Update go-nitro branch

* Fixes for mobymask-v3 stack

---------

Co-authored-by: Nabarun <nabarun@deepstacksoft.com>

app/data/container-build/cerc-mobymask-snap/Dockerfile

@@ -0,0 +1,13 @@
+FROM node:18.15.0-alpine3.16
+
+RUN apk --update --no-cache add git python3 alpine-sdk bash
+
+WORKDIR /app
+
+COPY . .
+
+RUN echo "Installing dependencies..." && \
+  yarn install && \
+  cd packages/snap
+
+CMD ["bash", "-c", "yarn start"]

app/data/container-build/cerc-mobymask-snap/build.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# Build cerc/mobymask-snap
+
+source ${CERC_CONTAINER_BASE_DIR}/build-base.sh
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+docker build -t cerc/mobymask-snap:local -f ${SCRIPT_DIR}/Dockerfile ${build_command_args} ${CERC_REPO_BASE_DIR}/mobymask-snap