`pg-oidc-validator-pgdg18` is not arm64 compatible

I added 127.0.0.1 keycloak to my /etc/hosts file on my Mac with Apple chip & then executed the following commands.

docker compose up -d
docker compose run --rm psql-client

Then I'm seeing following error.

========================================
PostgreSQL OAuth Client
========================================

Connecting to PostgreSQL with OAuth...

When prompted, follow the device flow:
  1. Visit the URL shown in your browser
  2. Enter the device code
  3. Login with: testuser / asdfasdf

========================================

psql: error: connection to server at "postgres" (172.24.0.3), port 5432 failed: FATAL:  could not access file "pg_oidc_validator": No such file or directory

The root cause is that pg-oidc-validator-pgdg18 is not arm64 compatible.

dpkg: error processing archive pg-oidc-validator-pgdg18.deb (--install):

 package architecture (amd64) does not match system (arm64)

Errors were encountered while processing:

 pg-oidc-validator-pgdg18.deb

Reproduce the failure on an Apple-chip Mac with docker compose up -d and docker compose run --rm psql-client, then inspect how pg-oidc-validator-pgdg18.deb is installed in the container. Done means the package is usable on arm64 and the PostgreSQL OAuth client connects successfully without the missing-file error.