Mercurial > sat_docs
diff docker/base/scripts/add_host @ 105:b69056368901
docker: images optimisation:
- reduced the number of layers by grouping many instructions
- moved stuff which don't change a lot at the beginning, and hg/apt at the end
- scripts are not now in scripts/ subdirectories
- prosody.cfg.lua is added using ADD instead of getting it online
- .hg/dirstate is copied in base (backend) and libervia, so mercurial revision is known
- removed lot of useless WORKDIR instruction, they are replaced by "cd" inside RUN instructions
- cleaning (apt-clean, rm) is done on the same instruction as the one than generate the data, to avoid useless data in layers
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 28 Feb 2016 02:01:20 +0100 |
| parents | |
| children | 12cb931dbea0 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/docker/base/scripts/add_host Sun Feb 28 02:01:20 2016 +0100 @@ -0,0 +1,18 @@ +#!/usr/bin/env python2 +# this script add aliases to /etc/hosts +import sys, re + +if len(sys.argv) < 2 or len(sys.argv) > 3: + sys.exit(1) + +host = sys.argv[1] +alias = sys.argv[2] if len(sys.argv) == 3 else "localhost" + +if host == "localhost" or host == alias: + sys.exit(0) + +print "Adding host {} as an alias of {}".format(host, alias) +with open("/etc/hosts", "r+") as f: + buf = re.sub(r"\\b{}\\b".format(alias), "{}\\t{}".format(alias, host), f.read(), 1) + f.seek(0) + f.write(buf)