Support http endpoints (http status codes)

[DukeyToo]

Sometimes it is needed to not just reach the endpoint, but verify that something is responding normally there. My specific use case was that I had an nginx server on which I was testing the endpoints "successfully", but they were returning 502 Bad Gateway errors because the server that it was proxying was not yet up.

Can add an option to use curl or wget to do this.

[maxclaus]

If you are looking for an approach that does not depend on third party tools (curl, wget) and has cross platform support. Please take a look on this other tool https://github.com/maxcnunes/waitforit.

[vitalets]

I ended up with wait-for-cmd that can wait for any provided command.
Example with curl:

docker run --rm vitalets/wait-for-cmd 'curl -f https://example.com > /dev/null 2>&1'