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fix postfix installation (stops because of hostname) #3

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fix postfix installation (stops because of hostname) #3

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8 changes: 5 additions & 3 deletions Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
FROM ubuntu:16.04
FROM ubuntu:21.10

MAINTAINER [email protected]

Expand All @@ -13,6 +13,10 @@ RUN set -x; \
&& DEBIAN_FRONTEND=noninteractive apt-get upgrade -y \
&& echo "postfix postfix/mailname string $MAILNAME" | debconf-set-selections \
&& echo "postfix postfix/main_mailer_type string 'Internet Site'" | debconf-set-selections \
&& hn=$(grep $(hostname) /etc/hosts | cut -f1) \
&& cp /etc/hosts /etc/hosts2 && sed -i '$ d' /etc/hosts2 && cp /etc/hosts2 /etc/hosts \
&& echo $hn $MAILNAME >> /etc/hosts \
&& echo $MAILNAME > /etc/hostname \
&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
postfix \
dovecot-core \
Expand All @@ -24,13 +28,11 @@ RUN set -x; \
&& rm -rf /var/cache/apt/archives/* /var/cache/apt/*.bin /var/lib/apt/lists/* \
&& rm -rf /usr/share/man/* && rm -rf /usr/share/doc/* \
&& touch /var/log/auth.log \

# Create mail user
&& adduser $MAIL_FS_USER --home $MAIL_FS_HOME --shell /bin/false --disabled-password --gecos "" \
&& chown -R ${MAIL_FS_USER}: $MAIL_FS_HOME \
&& usermod -aG $MAIL_FS_USER postfix \
&& usermod -aG $MAIL_FS_USER dovecot \

&& echo "Installed: OK"

ADD postfix /etc/postfix
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