diff --git a/Dockerfile b/Dockerfile
index 2c277141..7c1bafe1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
-FROM golang:1.12-alpine as builder
+FROM golang:1.15-alpine as builder
 COPY . /go/src/github.com/documize/community
-RUN cd /go/src/github.com/documize/community
+WORKDIR /go/src/github.com/documize/community
 RUN env GOOS=linux GOARCH=amd64 GODEBUG=tls13=1 go build -mod=vendor -o bin/documize-community-linux-amd64 ./edition/community.go
 
 # build release image