Adds OSMUI_SQL_DATABASE_URI env var generation to installer

Adds install of mysql deps in LWUI Dockerfile.
Adds use of entrypoint script in LWUI Dockerfile

Change-Id: Iab709bd534291083d4890dd33e9f3c490d11cea1
Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
diff --git a/installers/docker/docker-compose.yaml b/installers/docker/docker-compose.yaml
index f608262..d8866e5 100644
--- a/installers/docker/docker-compose.yaml
+++ b/installers/docker/docker-compose.yaml
@@ -174,5 +174,7 @@
       OSM_SERVER: nbi
     #depends_on:
     #  - nbi
+    env_file:
+      - ./lwui.env
     ports:
       - "${OSM_UI_PORTS:-80:80}"