Fixes all the paths and routing errors

Dockerfile

@@ -23,8 +23,8 @@ WORKDIR /app
 ENV FLASK_APP=/app/crc/__init__.py
 
 # Don't run gunicorn until the DC/OS container actually starts.
-# Otherwise, environment variables will not be availabele.
+# Otherwise, environment variables will not be available.
 #CMD ["pipenv", "run", "gunicorn", \
 #     "--bind", "0.0.0.0:8000", \
 #     "-e", "SCRIPT_NAME=/api", \
-#     "crc:app"]
+#     "wsgi:app"]

Pipfile

@@ -37,6 +37,7 @@ pandas = "*"
 xlrd = "*"
 ldap3 = "*"
 gunicorn = "*"
+werkzeug = "*"
 
 [requires]
 python_version = "3.7"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "5363eb56e2e1622e2c443647fdf0b1963f3d0ee7b25c61f7065a542e546ece5b"
+            "sha256": "fad2f86b02a85b074e8ff9d8f3822784444d0925b0bf4227d4b26bbff1c45c2f"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -863,6 +863,7 @@
                 "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43",
                 "sha256:6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c"
             ],
+            "index": "pypi",
             "version": "==1.0.1"
         },
         "xlrd": {

docker_run.sh

@@ -18,4 +18,4 @@ if [ "$RESET_DB" = "true" ]; then
   pipenv run flask load-example-data
 fi
 
-pipenv run gunicorn -e SCRIPT_NAME="$APPLICATION_ROOT" --bind 0.0.0.0:$PORT0 run:app
+pipenv run gunicorn -e SCRIPT_NAME="$APPLICATION_ROOT" --bind 0.0.0.0:$PORT0 wsgi:app

wsgi.py

@@ -0,0 +1,20 @@
+from werkzeug.exceptions import NotFound
+from werkzeug.middleware.dispatcher import DispatcherMiddleware
+from werkzeug.middleware.proxy_fix import ProxyFix
+
+from crc import app
+
+if __name__ == "__main__":
+    def no_app(environ, start_response):
+        return NotFound()(environ, start_response)
+
+
+    # Remove trailing slash, but add leading slash
+    base_url = '/' + app.config['APPLICATION_ROOT'].strip('/')
+
+    app.wsgi_app = DispatcherMiddleware(no_app, {app.config['APPLICATION_ROOT']: app.wsgi_app})
+    app.wsgi_app = ProxyFix(app.wsgi_app)
+
+    flask_port = app.config['FLASK_PORT']
+
+    app.run(host='0.0.0.0', port=flask_port)