Add gitconfig support for helm chart (#1194)

This commit adds support for gitconfig in the athens helm chart.

Reflects https://docs.gomods.io/configuration/authentication/#altassian-bitbucket-and-ssh-secured-git-vcs-s

charts/athens-proxy/Chart.yaml

@@ -1,5 +1,5 @@
 name: athens-proxy
-version: 0.2.14
+version: 0.2.15
 appVersion: 0.4.0
 description: The proxy server for Go modules
 icon: https://raw.githubusercontent.com/gomods/athens/master/docs/static/banner.png

charts/athens-proxy/README.md

@@ -46,6 +46,7 @@ Available options:
 - [Ingress Resource](https://docs.gomods.io/install/install-on-kubernetes/#ingress-resource)
 - [Upstream module repository](https://docs.gomods.io/install/install-on-kubernetes/#upstream-module-repository)
 - [.netrc file support](https://docs.gomods.io/install/install-on-kubernetes/#netrc-file-support)
+- [gitconfig support](https://docs.gomods.io/install/install-on-kubernetes/#gitconfig-support)
 
 ### Pass extra configuration environment variables
 

charts/athens-proxy/templates/deployment.yaml

@@ -170,6 +170,11 @@ spec:
         - name: ssh-keys
           mountPath: /ssh-keys
         {{- end }}
+        {{- if .Values.gitconfig.enabled }}
+        - name: gitconfig
+          mountPath: "/etc/gitconfig"
+          subPath: "gitconfig"
+        {{- end }}
       {{- with .Values.resources }}
         resources:
 {{ toYaml . | indent 10 }}
@@ -202,6 +207,14 @@ spec:
         secret:
           secretName: {{ template "fullname" . }}-ssh-git-servers
       {{- end }}
+      {{- if .Values.gitconfig.enabled }}
+      - name: gitconfig
+        secret:
+          secretName: {{ .Values.gitconfig.secretName }}
+          items:
+          - key: {{ .Values.gitconfig.secretKey }}
+            path: "gitconfig"
+      {{- end }}
     {{- with .Values.nodeSelector }}
       nodeSelector:
 {{ toYaml . | indent 8 }}

charts/athens-proxy/values.yaml

@@ -71,6 +71,15 @@ netrc:
   enabled: false
   existingSecret: netrcsecret
 
+# gitconfig section provides a way to inject git config file to make athens able to fetch modules from private git repos.
+gitconfig:
+  # By default, gitconfig is disabled.
+  enabled: false
+  # Name of the kubernetes secret (in the same namespace as athens-proxy) that contains git config.
+  secretName: athens-proxy-gitconfig
+  # Key in the kubernetes secret that contains git config data.
+  secretKey: gitconfig
+
 upstreamProxy:
   # This is where you can set the URL for the upstream module repository.
   # If 'enabled' is set to true, Athens will try to download modules from the upstream when it doesn't find them in its own storage.