Bump min required golang to 1.13 (#12717)

* Bump min required golang to 1.13

* Update config.yaml

* Update Makefile

* per silverwind feedback

* per silverwind

Co-authored-by: zeripath <art27@cantab.net>

Author: techknowlogick

.drone.yml

@@ -57,7 +57,7 @@ steps:
 
   - name: build-backend-no-gcc
     pull: always
-    image: golang:1.12 # this step is kept as the lowest version of golang that we support
+    image: golang:1.13 # this step is kept as the lowest version of golang that we support
     environment:
       GO111MODULE: on
       GOPROXY: off

Makefile

@@ -26,7 +26,7 @@ HAS_GO = $(shell hash $(GO) > /dev/null 2>&1 && echo "GO" || echo "NOGO" )
 COMMA := ,
 
 XGO_VERSION := go-1.15.x
-MIN_GO_VERSION := 001012000
+MIN_GO_VERSION := 001013000
 MIN_NODE_VERSION := 010013000
 
 DOCKER_IMAGE ?= gitea/gitea
@@ -186,7 +186,7 @@ help:
 go-check:
 	$(eval GO_VERSION := $(shell printf "%03d%03d%03d" $(shell go version | grep -Eo '[0-9]+\.[0-9.]+' | tr '.' ' ');))
 	@if [ "$(GO_VERSION)" -lt "$(MIN_GO_VERSION)" ]; then \
-		echo "Gitea requires Go 1.12 or greater to build. You can get it at https://golang.org/dl/"; \
+		echo "Gitea requires Go 1.13 or greater to build. You can get it at https://golang.org/dl/"; \
 		exit 1; \
 	fi
 

README.md

@@ -40,7 +40,7 @@ or if sqlite support is required:
 
 The `build` target is split into two sub-targets:
 
-- `make backend` which requires [Go 1.12](https://golang.org/dl/) or greater.
+- `make backend` which requires [Go 1.13](https://golang.org/dl/) or greater.
 - `make frontend` which requires [Node.js 10.13](https://nodejs.org/en/download/) or greater.
 
 If pre-built frontend files are present it is possible to only build the backend:

docs/config.yaml

@@ -19,7 +19,7 @@ params:
   author: The Gitea Authors
   website: https://docs.gitea.io
   version: 1.12.4
-  minGoVersion: 1.12
+  minGoVersion: 1.13
   goVersion: 1.15
   minNodeVersion: 10.13