hasura/graphql-engine:v1.3.3.cli-migrations-v2 crashes on heroku

Hi,
after a few months hasura stopped working on heroku, even though there were no changes made to the code.

Error-Message:
```
{"timestamp":"2021-05-14T08:42:38.000+0000","level":"info","type":"startup","detail":{"kind":"installing cli-ext plugin","info":""}}
FATA[0000] preparing execution context failed: setting up global config failed: cannot get home directory: exec: "getent": executable file not found in $PATH
```

I deployed hasura on a heroku-container.
Environment varialbes are set.
I use a 7$ Dyno, Western Europe.

Dockerimage:
```
FROM hasura/graphql-engine:v1.3.3.cli-migrations-v2

COPY ./hasura/migrations /hasura-migrations
COPY ./hasura/metadata /hasura-metadata

CMD graphql-engine \
--database-url $DATABASE_URL \
serve \
--server-port $PORT
```

heroku.yml
```
build:
docker:
web: Dockerfile
```

Does anyone have a similar problem or has an idea what the problem might be?