diff --git a/Dockerfile b/Dockerfile
index b64b0cf..b3e1aa9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-FROM golang:1.7.3
+FROM znly/protoc
+RUN apk --update add make git go rsync
 COPY . /go/src/github.com/moul/protoc-gen-gotemplate
 WORKDIR /go/src/github.com/moul/protoc-gen-gotemplate
 RUN go install .
-ENTRYPOINT ["protoc-gen-gotemplate"]
diff --git a/glide.lock b/glide.lock
index 1003fdc..33cdd2a 100644
--- a/glide.lock
+++ b/glide.lock
@@ -1,5 +1,5 @@
-hash: 6f0ff21a03d407a4a24bf299f8b80acc931e116457f5378867626c2de5c4265e
-updated: 2016-11-06T18:32:18.567649309+01:00
+hash: 2a443d1134599077e30c079238e394224e207bdc81ba96b662bba20e906d7a13
+updated: 2016-12-01T10:18:17.659451258+01:00
 imports:
 - name: github.com/golang/protobuf
   version: 98fa357170587e470c5f27d3c3ea0947b71eb455
@@ -11,5 +11,5 @@ imports:
 - name: github.com/kr/fs
   version: 2788f0dbd16903de03cb8186e5c7d97b69ad387b
 - name: github.com/moul/funcmap
-  version: 916897fb9db8a358561b3c2cdb7bd4d7cf2eb1c7
+  version: ae20ef49f610b7cb474d94afd71606af8fb09b77
 testImports: []
diff --git a/glide.yaml b/glide.yaml
index c9610ba..63eceb2 100644
--- a/glide.yaml
+++ b/glide.yaml
@@ -8,4 +8,4 @@ import:
   - protoc-gen-go/plugin
 - package: github.com/kr/fs
 - package: github.com/moul/funcmap
-  version: ~1.0.0
+  version: ~1.1.1
diff --git a/vendor/github.com/moul/funcmap/funcmap.go b/vendor/github.com/moul/funcmap/funcmap.go
index ad13b9d..a4fe228 100644
--- a/vendor/github.com/moul/funcmap/funcmap.go
+++ b/vendor/github.com/moul/funcmap/funcmap.go
@@ -2,6 +2,8 @@ package funcmap
 
 import (
 	"encoding/json"
+	"fmt"
+	"strconv"
 	"strings"
 	"text/template"
 )
@@ -21,6 +23,23 @@ var FuncMap = template.FuncMap{
 	"split": strings.Split,
 	"join":  strings.Join,
 	"title": strings.Title,
+	"unexport": func(input string) string {
+		return fmt.Sprintf("%s%s", strings.ToLower(input[0:1]), input[1:])
+	},
 	"lower": strings.ToLower,
 	"upper": strings.ToUpper,
+	"rev": func(v interface{}) string {
+		runes := []rune(v.(string))
+		for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
+			runes[i], runes[j] = runes[j], runes[i]
+		}
+		return string(runes)
+	},
+	"int": func(v interface{}) string {
+		a, err := strconv.Atoi(v.(string))
+		if err != nil {
+			return fmt.Sprintf("%v", v)
+		}
+		return fmt.Sprintf("%d", a)
+	},
 }