Mapping values are not allowed on context (Helm v3)

[nurimansyah89]

Hi, just want to note that there's a bug regarded Helm V3, when toYaml conversion with the trim will resulting inline result, e.g:

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This happens on both ui-deployment and registry-deployment yaml templates:

• https://github.com/Joxit/helm-charts/blob/62e0d8219bfea10994ebd8968dcdcfc04bac508d/charts/docker-registry-ui/templates/ui-deployment.yaml#L118
• https://github.com/Joxit/helm-charts/blob/62e0d8219bfea10994ebd8968dcdcfc04bac508d/charts/docker-registry-ui/templates/registry-deployment.yaml#L68

I suggest we should remove the trim function, so it can looks good, e.g.: (With trim removed)

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I'll open a PR to this if it can resolve the helm v3 issue 🙏

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@Joxit