Package mobymask-v2 stack web-apps similar to laconic-console app (#310)

* Build MobyMask web-app at container build step

* Fix web-app start script to use env variables in config

* Replace variables in built web-app files

* Use published mobymask-ui package from gitea

* Use published react-peer/test-app from gitea

* Remove local gitea publish TODO

Former-commit-id: cf79f0de0a

app/data/container-build/cerc-react-peer/start-serving-app.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+if [ -n "$CERC_SCRIPT_DEBUG" ]; then
+    set -x
+fi
+
+# TODO: Don't hard wire this:
+webapp_files_dir=/usr/local/share/.config/yarn/global/node_modules/@cerc-io/test-app/build
+/scripts/apply-webapp-config.sh /config/config.yml ${webapp_files_dir} MOBYMASK_HOSTED_CONFIG
+http-server -p 80 ${webapp_files_dir}