Update Dockerfile

Deleted requirements.txt

Dockerfile

@@ -3,7 +3,8 @@ FROM alpine:latest
 RUN set -ex \
     && apk add --no-cache git python3 \
     && python3 -m ensurepip \
-    && pip3 install -r requirements.txt
+    && pip3 install --upgrade pip \
+    && pip3 install mkdocs==1.1.2
 
 WORKDIR /docs
 VOLUME /docs

requirements.txt

-mkdocs==1.1.2