Docker build "postfix-tlspol" returns exit code: 255

Skittluier

Hi all!
I’ve also been updating Mailcow and have encountered the issue of postfix-tls-pol restarting repeatedly. No problem, of course, because there’s a solution for that, which is manually building the postfix-tlspol image.

So I’ve executed these troubleshooting commands suggested by the Mailcow team:
docker build -t ghcr.io/mailcow/postfix-tlspol:1.0 data/Dockerfiles/postfix-tlspol docker compose up -d

Unfortunately, I have received the following error for that: ERROR: failed to solve: process "/bin/sh -c apt-get update && apt-get install -y --no-install-recommends \tca-certificates \tdirmngr \tdnsutils \tiputils-ping \tsudo \tsupervisor \tredis-tools \tsyslog-ng \tsyslog-ng-core \tsyslog-ng-mod-redis \ttzdata \t&& rm -rf /var/lib/apt/lists/* \t&& touch /etc/default/locale" did not complete successfully: exit code: 255

I’ve tried manually executing the commands Docker wanted to execute, but there’s no problem there. The output I’ve received is enclosed in this thread.

If anyone could help me with this issue, I would greatly appreciate it. ❤️

output.txt

8kB

pkernstock

The error file mentions this error:

 > [stage-1  2/11] RUN apt-get update && apt-get install -y --no-install-recommends     ca-certificates         dirmngr         dnsutils        iputils-ping    sudo    supervisor      redis-tools     syslog-ng       syslog-ng-core  syslog-ng-mod-redis     tzdata  && rm -rf /var/lib/apt/lists/*  && touch /etc/default/locale:
0.697 exec /bin/sh: exec format error
------
Dockerfile:20

When doing a quick Google search, it looks like it’s related when a container is ran on the wrong architecture: https://stackoverflow.com/questions/73285601/docker-exec-usr-bin-sh-exec-format-error (e.g. a x86 container on ARM)

Skittluier

pkernstock

Interesting suggestion. Thanks! I’m going to check how to change the architecture for the build and will keep you posted. 😄