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#!/usr/bin/python
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import jinja2
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import os
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import socket
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import glob
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import tenacity
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from tenacity import retry
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convert = lambda src, dst: open(dst, "w").write(jinja2.Template(open(src).read()).render(**os.environ))
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@retry(stop=tenacity.stop_after_attempt(10), wait=tenacity.wait_random(min=2, max=5))
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def resolve():
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os.environ["FRONT_ADDRESS"] = socket.gethostbyname(os.environ.get("FRONT_ADDRESS", "front"))
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os.environ["REDIS_ADDRESS"] = socket.gethostbyname(os.environ.get("REDIS_ADDRESS", "redis"))
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if os.environ["WEBMAIL"] != "none":
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os.environ["WEBMAIL_ADDRESS"] = socket.gethostbyname(os.environ.get("WEBMAIL_ADDRESS", "webmail"))
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# Actual startup script
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resolve()
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for dovecot_file in glob.glob("/conf/*"):
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convert(dovecot_file, os.path.join("/etc/dovecot", os.path.basename(dovecot_file)))
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# Run postfix
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os.system("chown -R mail:mail /mail /var/lib/dovecot")
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os.execv("/usr/sbin/dovecot", ["dovecot", "-c", "/etc/dovecot/dovecot.conf", "-F"])
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