refactor: new dev/prod containers

- Use a single Dockerfile for all Zeppelin services
- Add a Dockerfile in project root that can be used by
  app hosting services
- Provide a standalone and lightweight prod setup
  - Standalone is the same as the old setup, with mysql+nginx
  - Lightweight only runs bot+backend+dash, no mysql/nginx
- Remove mounted mysql data folders for dev and prod
  - This resolves permission issues caused by the mount
  - The mysql service uses a regular named volume now
- Simplify .env options and clearly separate different prod setups
- Remove update.sh
  - Different setups require different update procedures, so a common
    update.sh no longer works

.dockerignore

@@ -8,4 +8,97 @@
 
 node_modules
 /backend/dist
+/shared/dist
 /dashboard/dist
+
+# FROM GITIGNORE:
+
+# Created by .ignore support plugin (hsz.mobi)
+### Node template
+# Logs
+/logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.clinic
+.clinic-bot
+.clinic-api
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+*.env
+.env
+
+# windows folder options
+desktop.ini
+
+# PHPStorm
+.idea/
+
+# Misc
+/convert.js
+/startscript.js
+.cache
+npm-ls.txt
+npm-audit.txt
+.vscode/launch.json
+
+# Debug files
+*.debug.ts
+*.debug.js
+
+.vscode/
+
+config-errors.txt
+/config-schema.json
+
+*.tsbuildinfo