Merge pull request #6 from Skadabr/master

fix ModuleNotFoundError: No module named 'six'

Author: itbm

Dockerfile

@@ -4,7 +4,7 @@ LABEL maintainer="ITBM"
 RUN apk update \
 	&& apk add coreutils \
 	&& apk add postgresql-client \
-	&& apk add python3 py3-pip && pip3 install awscli && apk del py3-pip \
+	&& apk add python3 py3-pip && pip3 install --upgrade pip && pip3 install awscli \
 	&& apk add openssl \
 	&& apk add curl \
 	&& curl -L --insecure https://github.com/odise/go-cron/releases/download/v0.0.6/go-cron-linux.gz | zcat > /usr/local/bin/go-cron && chmod u+x /usr/local/bin/go-cron \