According to https://github.com/moby/moby/issues/4032#issuecomment-163689851 (and some other comments in the issue) it's not recommended to set `DEBIAN_FRONTEND` via `ENV` in a Dockerfile. `ARG` has the same effect at build time but does not change `DEBIAN_FRONTEND` in the final image, so I switched to it. It should also work to remove it completely.
		
			
				
	
	
		
			27 lines
		
	
	
		
			837 B
		
	
	
	
		
			Docker
		
	
	
	
	
	
			
		
		
	
	
			27 lines
		
	
	
		
			837 B
		
	
	
	
		
			Docker
		
	
	
	
	
	
FROM debian:jessie-slim
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LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
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ARG DEBIAN_FRONTEND=noninteractive
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ENV LC_ALL C
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RUN apt-key adv --fetch-keys http://rspamd.com/apt-stable/gpg.key \
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	&& echo "deb http://rspamd.com/apt-stable/ jessie main" > /etc/apt/sources.list.d/rspamd.list \
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	&& apt-get update && apt-get install -y --force-yes --no-install-recommends \
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		cron \
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		rmilter \
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		supervisor \
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		syslog-ng \
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		syslog-ng-core \
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	&& rm -rf /var/lib/apt/lists/*
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COPY supervisord.conf /etc/supervisor/supervisord.conf
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EXPOSE 9000
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RUN sed -i -E 's/^(\s*)system\(\);/\1unix-stream("\/dev\/log");/' /etc/syslog-ng/syslog-ng.conf
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RUN touch /var/log/mail.log && chmod 640 /var/log/mail.log && chown root:adm /var/log/mail.log
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CMD exec /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
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RUN rm -rf /tmp/* /var/tmp/*
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