From 4baed54d6120aa6200095b83ed1bcd1656459083 Mon Sep 17 00:00:00 2001
From: ruflin <spam@ruflin.com>
Date: Thu, 12 Sep 2019 15:34:23 +0200
Subject: [PATCH] Fix Docker image to specific Golang version

So far the `:latest` image was used for Golang. To be used in production I prefer to tied it to a very specific version so we know what is run and what we test is identical.

A file `.go_version` was introduced which long term should serve as the single point of through for the go version, also for CI. At the moment it is only there for documentation purpose.

Note: As part of this change I also looked into using the alpine Golang image but it does not have Git included, which makes working with the Golang mod dependency trickier.
---
 .go_version | 1 +
 Dockerfile  | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)
 create mode 100644 .go_version

diff --git a/.go_version b/.go_version
new file mode 100644
index 000000000..feaae22ba
--- /dev/null
+++ b/.go_version
@@ -0,0 +1 @@
+1.13.0
diff --git a/Dockerfile b/Dockerfile
index 01578360d..3c4a222d9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:latest
+FROM golang:${GO_VERSION:-1.13.0}
 
 RUN \
     apt-get update \