fix: prevent String.repeat range error

[b3nThomas]

Fixes #25

Small PR to prevent a negative value from being used for borderLength, and in turn, throwing a range error.
This only happens when process.stdout.columns is equal to 0, for example, when running inside Docker without an interactive terminal.

More details in the issue I raised.

[b3nThomas]

@eahefnawy @ac360 @medikoo Sorry to tag you directly but you're the only contributors on this repo who have affiliations with the serverless org. Does anybody maintain this repo anymore and is this PR likely to get approved, or am I better off just forgetting it and using my own forked version?

Many thanks, Ben

[medikoo]

@b3nThomas I suggest forking it. Thanks!

[b3nThomas]

@medikoo Hmm ok. That's a shame...

[b3nThomas]

Just an FYI but I've tried this out on my fork and it works nicely. You just get the message but without the starred border:

[2022-03-15T11:08:01.545Z]   site: 
[2022-03-15T11:08:01.545Z]     appUrl:         XXXXXXXX
[2022-03-15T11:08:01.545Z]     bucketName:     XXXXXXXX
[2022-03-15T11:08:01.545Z]     distributionId: XXXXXXXX
[2022-03-15T11:08:01.545Z] 
[2022-03-15T11:08:01.545Z]   
[2022-03-15T11:08:01.545Z]   Warning: You are using the beta version of Serverless Components. Please migrate to the GA version for enhanced features: https://github.com/serverless/components
[2022-03-15T11:08:01.545Z]   
[2022-03-15T11:08:01.545Z] 
[2022-03-15T11:08:01.545Z] 
[2022-03-15T11:08:01.545Z]   314s › site › done