Set $HOME to /data/gitea/git for rootless image (#447)

fix #396

Set the default of `$HOME` to `/data/gitea/git` for rootless images to make chart openshift compliant.

Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/447
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>

templates/gitea/statefulset.yaml

@@ -173,6 +173,10 @@ spec:
               value: /data
             - name: GITEA_TEMP
               value: /tmp/gitea
+            {{- if .Values.image.rootless }}
+            - name: HOME
+              value: /data/gitea/git
+            {{- end }}
             {{- if .Values.gitea.ldap }}
             {{- range $idx, $value := .Values.gitea.ldap }}
             {{- if $value.existingSecret }}
@@ -268,6 +272,10 @@ spec:
               value: /tmp/gitea
             - name: TMPDIR
               value: /tmp/gitea
+            {{- if .Values.image.rootless }}
+            - name: HOME
+              value: /data/gitea/git
+            {{- end }}
             {{- if .Values.signing.enabled }}
             - name: GNUPGHOME
               value: {{ .Values.signing.gpgHome }}