Update Dockerfile

Dockerfile

@@ -2,7 +2,7 @@ FROM alpine:latest
 LABEL maintainer="Luke Tainton <luke@tainton.uk>"
 ARG DOCUMIZE_VERSION=v3.6.0
 RUN apk add --no-cache curl
-WORKDIR /
+WORKDIR /opt
 RUN curl -L -o documize "https://github.com/documize/community/releases/download/${DOCUMIZE_VERSION}/documize-community-linux-amd64" && chmod 755 documize
-ENTRYPOINT ["/documize -port 80"]
+ENTRYPOINT ["./documize -port 80"]
 EXPOSE 80