when sending alerts by mail, images are rendered with constant width and height parameters. how can these values be changed globally or individually?
t=2020-09-16T17:11:02+0000 lvl=dbug msg="calling remote rendering service" logger=rendering renderer=http url="http://grafana-custom-render:8081/render?deviceScaleFactor=1.000000&domain=grafana-custom&encoding=&height=500&renderKey=****&timeout=15&timezone=&url=http%3A%2F%2Fgrafana-custom%3A80%2Fd-solo%2F1ysPSM3Wz%2Ftiumgu-uvedomleniia-ob-oshibkakh-vygruzki%3ForgId%3D1%26panelId%3D37%26render%3D1&width=1000"
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grafana 7.1.5
render image: grafana/grafana-image-renderer:2.0.0