Use the full ICU in docker

DiscordChatExporter.Cli.dockerfile

@@ -36,7 +36,7 @@ LABEL org.opencontainers.image.source="https://github.com/Tyrrrz/DiscordChatExpo
 LABEL org.opencontainers.image.licenses="MIT"
 
 # Alpine image doesn't come with the ICU libraries pre-installed, so we need to install them manually
-RUN apk add --no-cache icu-libs
+RUN apk add --no-cache icu-data-full
 ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
 
 # Create a non-root user to run the app, so that the output files can be accessed by the host