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/list/main.css

@@ -0,0 +1,118 @@
+/* List View
+--------------------------------------------------------------------------------------------------*/
+/* possibly reusable */
+.fc-event-dot {
+  display: inline-block;
+  width: 10px;
+  height: 10px;
+  border-radius: 5px;
+}
+
+/* view wrapper */
+.fc-rtl .fc-list-view {
+  direction: rtl;
+  /* unlike core views, leverage browser RTL */
+}
+
+.fc-list-view {
+  border-width: 1px;
+  border-style: solid;
+}
+
+/* table resets */
+.fc .fc-list-table {
+  table-layout: auto;
+  /* for shrinkwrapping cell content */
+}
+
+.fc-list-table td {
+  border-width: 1px 0 0;
+  padding: 8px 14px;
+}
+
+.fc-list-table tr:first-child td {
+  border-top-width: 0;
+}
+
+/* day headings with the list */
+.fc-list-heading {
+  border-bottom-width: 1px;
+}
+
+.fc-list-heading td {
+  font-weight: bold;
+}
+
+.fc-ltr .fc-list-heading-main {
+  float: left;
+}
+
+.fc-ltr .fc-list-heading-alt {
+  float: right;
+}
+
+.fc-rtl .fc-list-heading-main {
+  float: right;
+}
+
+.fc-rtl .fc-list-heading-alt {
+  float: left;
+}
+
+/* event list items */
+.fc-list-item.fc-has-url {
+  cursor: pointer;
+  /* whole row will be clickable */
+}
+
+.fc-list-item-marker,
+.fc-list-item-time {
+  white-space: nowrap;
+  width: 1px;
+}
+
+/* make the dot closer to the event title */
+.fc-ltr .fc-list-item-marker {
+  padding-right: 0;
+}
+
+.fc-rtl .fc-list-item-marker {
+  padding-left: 0;
+}
+
+.fc-list-item-title a {
+  /* every event title cell has an <a> tag */
+  text-decoration: none;
+  color: inherit;
+}
+
+.fc-list-item-title a[href]:hover {
+  /* hover effect only on titles with hrefs */
+  text-decoration: underline;
+}
+
+/* message when no events */
+.fc-list-empty-wrap2 {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+}
+
+.fc-list-empty-wrap1 {
+  width: 100%;
+  height: 100%;
+  display: table;
+}
+
+.fc-list-empty {
+  display: table-cell;
+  vertical-align: middle;
+  text-align: center;
+}
+
+.fc-unthemed .fc-list-empty {
+  /* theme will provide own background */
+  background-color: #eee;
+}