docker fails

#3 [iris internal] load metadata for docker.io/store/intersystems/iris-community:2019.3.0.309.0
#3 ERROR: docker.io/store/intersystems/iris-community:2019.3.0.309.0: not found

PR to fix is ignored for > 3 mionths

[r-cemper]

can't close it because the username has changed since the creation