Integrate with hosted-app-utils

Strip down this repo and allow the hosted-app-utils `package` script to
auto-generate the package.

docker-compose.yml

@@ -0,0 +1,18 @@
+version: "3.8"
+services:
+  streamline-emr:
+    image: ${APP_IMAGE:-streamline-emr:latest}
+    container_name: ${APP_CONTAINER:-streamline-emr}
+    volumes:
+        - "${DATA_DIR:-./data}:/var/lib/mysql"
+    ports:
+      - "${APP_PORT:-3000}:80"
+    dns: 0.0.0.0
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:80"]
+      timeout: 30s
+      start_period: 3600s
+      start_interval: 10s
+      interval: 30s
+      retries: 5
+