From e95b343d694acba88cc08fb8e7092d54b3ee6cd3 Mon Sep 17 00:00:00 2001 From: yyamashita Date: Mon, 1 Jun 2026 21:28:55 +0900 Subject: entrypoint: use python3 for resolv.conf edit (sed -i fails on bind mount) Co-Authored-By: Claude Sonnet 4.6 --- mail/entrypoint.sh | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'mail') diff --git a/mail/entrypoint.sh b/mail/entrypoint.sh index 49d8d64..a8b87b4 100755 --- a/mail/entrypoint.sh +++ b/mail/entrypoint.sh @@ -15,9 +15,14 @@ if [[ ! -f "$KEY_FILE" ]]; then fi # Docker の embedded DNS (127.0.0.11) は MX クエリを解決できないことがあるため -# 外部 DNS に差し替える（コンテナ内の名前解決は不要なので問題なし） -sed -i 's/nameserver 127.0.0.11/nameserver 8.8.8.8/' /etc/resolv.conf -echo 'nameserver 1.1.1.1' >> /etc/resolv.conf +# 外部 DNS に差し替える（sed -i は bind mount で失敗するため python3 で書き換え） +python3 - << 'PYEOF' +path = '/etc/resolv.conf' +content = open(path).read().replace('nameserver 127.0.0.11', 'nameserver 8.8.8.8') +if '1.1.1.1' not in content: + content += 'nameserver 1.1.1.1\n' +open(path, 'w').write(content) +PYEOF # Start rsyslog for Postfix logging rsyslogd -- cgit v1.2.3