I have a problem with xml parsing when using alpine/flask Dockerfile  (the only minor change is upgraded Xerces version to 3.2.1 and added curl package to apk). After building and starting a container I tried to send sample POST request using curl from within the running container (I checked the xml and it's well-formated):
Any idea what could be wrong? I hadn't this problem before. It started after I built a new Docker image (but from the same Dockerfile). I suspect expat or xerces but not really sure what I should be looking for.