search: preview added

- The search result list now has previews
- The Dockerfile doesnt need git anymore

Dockerfile

@@ -0,0 +1,21 @@
+FROM ubuntu
+
+MAINTAINER Tiyn tiyn@martenkante.eu
+
+RUN apt-get update
+
+RUN apt-get install python3 python3-pip -y
+
+COPY src /wiki
+
+WORKDIR /wiki
+
+RUN pip3 install -r requirements.txt
+
+VOLUME /wiki/templates/entry
+
+EXPOSE 5000
+
+ENTRYPOINT [ "python3" ]
+
+CMD [ "app.py" ]