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postgres:alpine linux/arm64: exec format error (entrypoint shell files empty) #1378

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postgres:alpine linux/arm64: exec format error (entrypoint shell files empty)#1378

Description

@dbIgel
dbIgel
opened on Nov 5, 2025

The image sha256:48c8ad3a7284b82be4482a52076d47d879fd6fb084a1cbfccbd551f9331b0e40 has empty startup scripts and thus can not run.

When startet:

% docker run -it --rm --platform linux/arm64 postgres:alpine bash
exec /usr/local/bin/docker-entrypoint.sh: exec format error

Further inspection reveals that the entrypoint script is empty:

% docker run -it --rm --platform linux/arm64 --entrypoint /bin/sh postgres:alpine
/ # ls -al /usr/local/bin/*.sh
lrwxrwxrwx    1 root     root            23 Oct 22 17:40 /usr/local/bin/docker-enforce-initdb.sh -> docker-ensure-initdb.sh
-rwxr-xr-x    1 root     root             0 Oct 22 17:38 /usr/local/bin/docker-ensure-initdb.sh
-rwxr-xr-x    1 root     root             0 Oct 22 17:38 /usr/local/bin/docker-entrypoint.sh

In comparison, the (working) amd64 version (sha256:48c8ad3a7284b82be4482a52076d47d879fd6fb084a1cbfccbd551f9331b0e40):

% docker run -it --rm --platform linux/amd64 --entrypoint /bin/sh postgres:alpine
/ # ls -al /usr/local/bin/*.sh
lrwxrwxrwx    1 root     root            23 Oct 22 17:42 /usr/local/bin/docker-enforce-initdb.sh -> docker-ensure-initdb.sh
-rwxr-xr-x    1 root     root          2317 Oct 22 17:39 /usr/local/bin/docker-ensure-initdb.sh
-rwxr-xr-x    1 root     root         14646 Oct 22 17:39 /usr/local/bin/docker-entrypoint.sh

Activity

  1. yosifkit commented on Nov 5, 2025

    @yosifkit
    yosifkit
    on Nov 5, 2025
    Member

    That seem like local state got corrupted. I checked the image on hub and the arm64 image has the entrypoint scripts. Pulling the image results in a correct entrypoint.sh:

    $ docker run -it --rm --platform linux/arm64 postgres:alpine bash
Unable to find image 'postgres:alpine' locally
alpine: Pulling from library/postgres
e0cd6769e23c: Pull complete
b0ad42f9114e: Pull complete
d9708c695497: Pull complete
b8766da0c426: Pull complete
9f71dc4be8f8: Pull complete
94800f566750: Pull complete
6b59a28fa201: Pull complete
aa4fc12bd3e6: Pull complete
e268d9926fd7: Pull complete
fa72dc705f57: Pull complete
Digest: sha256:48c8ad3a7284b82be4482a52076d47d879fd6fb084a1cbfccbd551f9331b0e40
Status: Downloaded newer image for postgres:alpine
b2581b43bcdf:/# ls -al /usr/local/bin/*.sh
lrwxrwxrwx    1 root     root            23 Oct 22 17:40 /usr/local/bin/docker-enforce-initdb.sh -> docker-ensure-initdb.sh
-rwxr-xr-x    1 root     root          2317 Oct 22 17:38 /usr/local/bin/docker-ensure-initdb.sh
-rwxr-xr-x    1 root     root         14646 Oct 22 17:38 /usr/local/bin/docker-entrypoint.sh
b2581b43bcdf:/#
exit
  2. docker-library
    locked and limited conversation to collaborators on Nov 5, 2025
  3. tianon
    converted this issue into a discussion #1379 on Nov 5, 2025
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