add example with mountpoints define

.werf/defines/image-mountpoints.tmpl

@@ -0,0 +1,23 @@
+# add mount points from file mount_points.yaml in the build dir
+
+{{- define "image mount points" }}
+  {{- $mountPoints := ($.Files.Get (printf "images/%s/mount-points.yaml" $.ImageName) | fromYaml) }}
+  {{- range $v := $mountPoints.dirs }}
+- add: /tools/mounts/mountdir
+  to: {{ $v }}
+  owner: 64535
+  group: 64535
+  stageDependencies:
+    install:
+    - "**/*"
+  {{- end }}
+  {{- range $v := $mountPoints.files }}
+- add: /tools/mounts/mountfile
+  to: {{ $v }}
+  owner: 64535
+  group: 64535
+  stageDependencies:
+    install:
+    - "**/*"
+  {{- end }}
+{{- end }}

.werf/stages/images.yaml

@@ -2,6 +2,7 @@
 
 {{- range $path, $content := $ImagesBuildFiles  }}
   {{ $ctx := (dict "ImageName" ($path | split "/")._1) }}
+  {{- $_ := set $ctx "Files" $.Files }} 
 ---
   {{- /* For Dockerfile just render it from the folder. */ -}}
   {{- if not (regexMatch "/werf.inc.yaml$" $path) }}

images/image-with-mountpoints-example/mount-points.yaml

@@ -0,0 +1,2 @@
+dirs:
+  - /mount-dir-example

images/image-with-mountpoints-example/werf.inc.yaml

@@ -0,0 +1,8 @@
+{{ /*
+---
+image: mpexample
+from: ealen/echo-server:0.7.0
+git:
+{{- include "image mount points" . }}
+
+/* }}

templates/deployment-mountpoints-example.yaml

@@ -0,0 +1,38 @@
+{{- /*
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mpexample
+  namespace: {{ .Chart.Name }}
+  {{- include "helm_lib_module_labels" (list . (dict "app" "echoserver")) | nindent 2 }}
+spec:
+  revisionHistoryLimit: 2
+  replicas: {{ .Values.echoserver.replicas }}
+  selector:
+    matchLabels:
+      app: mpexample
+  template:
+    metadata:
+      labels:
+        app: mpexample
+    spec:
+      priorityClassName: develop
+      containers:
+        - image: {{ include "helm_lib_module_image" (list . "mpexample") }}
+          imagePullPolicy: IfNotPresent
+          name: echoserver
+          ports:
+            - containerPort: 8080
+              name: http
+          env:
+            - name: PORT
+              value: "8080"
+          volumeMounts:
+            - name: example
+              mountPath: /mount-dir-example
+      volumes:
+        - name: example
+          emptyDir:
+            sizeLimit: 50Mi
+*/ -}}

tools/mounts/README.md

@@ -0,0 +1,3 @@
+# Mount primitives
+
+This dir contains empty dir and empty file to use as mountpoints in the images.