command `apt-get -y update` is failed in bitbuket pipeline

[Bill]

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.

[Bill]

it is weird. 

Didn't change anything, it works in the afternoon. 

[Steven Vaccarella]

Hi Bill,

Which docker image are you using for your pipeline? I tried a few different images and it is working for me.