docker build --build-arg=PGVERSION=12 failed to create symbolic link '/usr/lib/postgresql/12/lib/postgis-2.5.so': File exists

[oneumyvakin]

Hello,

$ git pull
remote: Enumerating objects: 13, done.
remote: Counting objects: 100% (13/13), done.
remote: Compressing objects: 100% (9/9), done.
remote: Total 13 (delta 6), reused 11 (delta 4), pack-reused 0
Unpacking objects: 100% (13/13), 2.88 KiB | 736.00 KiB/s, done.
From https://github.com/zalando/spilo
   ca29b3e..b89bd52  feature/cdp-ecr -> origin/feature/cdp-ecr
 * [new tag]         3.0-p1          -> 3.0-p1
Already up to date.
$ git branch
* master
$ cd postgres-appliance
$ docker build --build-arg=PGVERSION=12 --tag $YOUR_TAG .

failed with

#0 459.3 Reading package lists...
#0 459.8 Building dependency tree...
#0 459.9 Reading state information...
#0 460.0 postgresql-server-dev-12 is already the newest version (12.14-1.pgdg22.04+1).
#0 460.0 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
#0 460.0 + '[' false '!=' true ']'
#0 460.0 + for version in $DEB_PG_SUPPORTED_VERSIONS
#0 460.0 + ln -s postgis-3.so /usr/lib/postgresql/10/lib/postgis-2.5.so
#0 460.0 + for version in $DEB_PG_SUPPORTED_VERSIONS
#0 460.0 + ln -s postgis-3.so /usr/lib/postgresql/11/lib/postgis-2.5.so
#0 460.0 + for version in $DEB_PG_SUPPORTED_VERSIONS
#0 460.0 + ln -s postgis-3.so /usr/lib/postgresql/12/lib/postgis-2.5.so
#0 460.0 + for version in $DEB_PG_SUPPORTED_VERSIONS
#0 460.0 + ln -s postgis-3.so /usr/lib/postgresql/13/lib/postgis-2.5.so
#0 460.0 + for version in $DEB_PG_SUPPORTED_VERSIONS
#0 460.0 + ln -s postgis-3.so /usr/lib/postgresql/14/lib/postgis-2.5.so
#0 460.0 + for version in $DEB_PG_SUPPORTED_VERSIONS
#0 460.0 + ln -s postgis-3.so /usr/lib/postgresql/12/lib/postgis-2.5.so
#0 460.0 ln: failed to create symbolic link '/usr/lib/postgresql/12/lib/postgis-2.5.so': File exists
------
Dockerfile:71
--------------------
  69 |     
  70 |     WORKDIR /builddeps
  71 | >>> RUN bash base.sh
  72 |     
  73 |     # Install wal-g
--------------------
ERROR: failed to solve: process "/bin/sh -c bash base.sh" did not complete successfully: exit code: 1

[hughcapet]

Hello. For custom PGVERSION build arg you also need to re-define PGOLDVERSIONS https://github.com/zalando/spilo/blob/master/postgres-appliance/Dockerfile#LL51-L54

[oneumyvakin]

@hughcapet Oh, indeed. Thank you!