Testing of common chart

charts/common/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/common/Chart.yaml

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+apiVersion: v2
+name: common
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: library
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

charts/common/templates/_configmap.yaml

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+{{- define "common.configmap.tpl" -}}
+{{- if .Values.vars }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "common.robustName" .Release.Name }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "helm-chart.labels" . | nindent 4 }}
+data:
+{{- range $key, $val := .Values.vars }}
+  {{ $key }}: {{ $val | quote }}
+{{- end }}
+{{- end }}
+{{- end -}}

charts/common/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+
+{{/*
+Create robustName that can be used as Kubernetes resource name, and as subdomain as well
+\w – Latin letters, digits, underscore '_' .
+\W – all but \w .
+*/}}
+{{- define "common.robustName" -}}
+{{ regexReplaceAll "[^0-9A-Za-z_\\.]+" . "-" | replace "_" "-" | lower | trunc 63 | trimSuffix "-" | trimPrefix "-" }}
+{{- end }}