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/elite/bower_components/datatables-plugins/i18n/Finnish.lang

@@ -0,0 +1,24 @@
+/**
+ * Finnish translation
+ *  @name Finnish
+ *  @anchor Finnish
+ *  @author Seppo Äyräväinen
+ */
+
+{
+	"sProcessing":   "Hetkinen...",
+	"sLengthMenu":   "Näytä kerralla _MENU_ riviä",
+	"sZeroRecords":  "Tietoja ei löytynyt",
+	"sInfo":         "Näytetään rivit _START_ - _END_ (yhteensä _TOTAL_ )",
+	"sInfoEmpty":    "Näytetään 0 - 0 (yhteensä 0)",
+	"sInfoFiltered": "(suodatettu _MAX_ tuloksen joukosta)",
+	"sInfoPostFix":  "",
+	"sSearch":       "Etsi:",
+	"sUrl":          "",
+	"oPaginate": {
+		"sFirst":    "Ensimmäinen",
+		"sPrevious": "Edellinen",
+		"sNext":     "Seuraava",
+		"sLast":     "Viimeinen"
+	}
+}