Fix docker container errors

Problem with AWS cli fixed by installing via apk instead of wget
aws/aws-cli#8036

Problem with Maria DB client fixed by installing additional package as recommended:
https://community.home-assistant.io/t/usr-lib-mariadb-plugin-caching-sha2-password-so-cannot-be-found/439973/7

Dockerfile

@@ -1,11 +1,7 @@
 FROM python:3-alpine
 
-RUN wget "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" \
- && unzip awscli-bundle.zip \
- && rm awscli-bundle.zip \
- && ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws \
- && rm -r ./awscli-bundle
-RUN apk --no-cache add mariadb-client bash gnupg
+RUN apk add aws-cli
+RUN apk --no-cache add mariadb-connector-c mariadb-client bash gnupg
 
 COPY govwifi-backup.sh ./
 RUN chmod +x /govwifi-backup.sh