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The tests might start running and attempting to do DNS resolutions before minidns has come up, which can cause false positives and flaky tests. This patch makes the entrypoint wait until minidns has come up, to fix the problem.
50 lines
1.2 KiB
Bash
Executable File
50 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# Script that is used as a Docker entrypoint.
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#
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# It starts minidns with a zone resolving "localhost", and overrides
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# /etc/resolv.conf to use it. Then launches docker CMD.
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#
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# This is used for more hermetic Docker test environments.
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set -e
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. $(dirname ${0})/../util/lib.sh
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init
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# Go to the root of the repository.
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cd ../..
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# Undo the EXIT trap, so minidns continues to run in the background.
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trap - EXIT
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set -v
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go build -o /tmp/minidns "${UTILDIR}/minidns.go"
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# The DNS server resolves only "localhost"; tests will rely on this, as we
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# $HOSTALIASES to point our test hostnames to localhost, so it needs to
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# resolve.
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echo "
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localhost A 127.0.0.1
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localhost AAAA ::1
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" > /tmp/zones
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start-stop-daemon --start --background \
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--exec /tmp/minidns \
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-- --zones=/tmp/zones
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echo "nameserver 127.0.0.1" > /etc/resolv.conf
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echo "nameserver ::1" >> /etc/resolv.conf
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# Wait until the minidns resolver comes up.
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wait_until_ready 53
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# Launch arguments, which come from docker CMD, as "chasquid" user.
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# Running tests as root makes some integration tests more difficult, as for
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# example Exim has hard-coded protections against running as root.
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sudo -u chasquid -g chasquid \
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--set-home \
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--preserve-env PATH=${PATH} \
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-- "$@"
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