We run with below command in bitbucket pipeline for a while
```
apt-get -y update
```
But today, we got error
```
E: There were unauthenticated packages and -y was used without --allow-unauthenticated
```
Then we have to add option `--allow-unauthenticated` to get a successful update.
But this is not we expected.
I did a test in `Ubuntu 16.04.4 LTS` with `apt-get -y update`. I don’t need to add option `--allow-unauthenticated`
So anything changed in Bitbucket cloud with pipeline? can we get some explanations for this issue from Atlassian/Bitbucket support team?
Because this issue, it impacted all our build jobs. We don't want to add `--allow-unauthenticated` for each build job.