Martin,
Though both Assure and ACR are not certified on "Azure Cloud", since the OS is LINUX I do not anticipate any issues. That being said, any deviation from our published setup defined within the system requirements will not be supported should issues arise.
ACR System Requirements
Assure System Requirements
Below are links where the team may download the needed product files. Assure comes with both Windows and UNIX / LINUX scripts by default, though please ensure the correct ACR package is downloaded as both Windows and UNIX / LINUX offerings are available.
ACR Installation Files
Assure Installation Files
Matthew Kennedy