Build modified streamline images

The official image from streamline does not currently work for the arm64
platform. As a temporary measure, the source code and docker build scripts
have been lifted from the official images and are used to build locally.

Some additional modifications are made to reduce overall image size, these
are documented in docker/README.md

docker/streamline-src/public/fullcalendar/packages/moment-timezone/main.min.js

@@ -0,0 +1,6 @@
+/*!
+FullCalendar Moment Timezone Plugin v4.3.0
+Docs & License: https://fullcalendar.io/
+(c) 2019 Adam Shaw
+*/
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("moment"),require("moment-timezone/builds/moment-timezone-with-data"),require("@fullcalendar/core")):"function"==typeof define&&define.amd?define(["exports","moment","moment-timezone/builds/moment-timezone-with-data","@fullcalendar/core"],t):t((e=e||self).FullCalendarMomentTimezone={},e.moment,e.moment,e.FullCalendar)}(this,function(e,t,n,o){"use strict";var r=function(e,t){return(r=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n])})(e,t)};var i=t,u=function(e){function t(){return null!==e&&e.apply(this,arguments)||this}return function(e,t){function n(){this.constructor=e}r(e,t),e.prototype=null===t?Object.create(t):(n.prototype=t.prototype,new n)}(t,e),t.prototype.offsetForArray=function(e){return i.tz(e,this.timeZoneName).utcOffset()},t.prototype.timestampToArray=function(e){return i.tz(e,this.timeZoneName).toArray()},t}(o.NamedTimeZoneImpl),m=o.createPlugin({namedTimeZonedImpl:u});e.default=m,Object.defineProperty(e,"__esModule",{value:!0})});