added environment argument for golang version (#1361)

* added environment argument for golang version

* Revert: added environment argument for golang version (84298506)

* reverted to specifying go version 1.12 as the default

* fix spacing

Dockerfile.test

@@ -1,4 +1,7 @@
-FROM golang:1.12
+ARG GOLANG_VERSION=1.12
+FROM golang:$GOLANG_VERSION
+
+RUN echo $GOLANG_VERSION
 
 RUN mkdir -p /athens/tests
 

Makefile

@@ -1,5 +1,10 @@
 VERSION = "unset"
 DATE=$(shell date -u +%Y-%m-%d-%H:%M:%S-%Z)
+
+ifndef GOLANG_VERSION
+override GOLANG_VERSION = 1.12
+endif
+
 .PHONY: build
 build: ## build the athens proxy
 	cd cmd/proxy && go build
@@ -47,7 +52,8 @@ test-unit: ## run unit tests with race detector and code coverage enabled
 
 .PHONY: test-unit-docker
 test-unit-docker: ## run unit tests with docker
-	docker-compose -p athensunit up --exit-code-from=testunit --build testunit
+	docker-compose -p athensunit build --build-arg GOLANG_VERSION=${GOLANG_VERSION} testunit	
+	docker-compose -p athensunit up --exit-code-from=testunit testunit
 	docker-compose -p athensunit down
 
 .PHONY: test-e2e
@@ -56,7 +62,8 @@ test-e2e:
 
 .PHONY: test-e2e-docker
 test-e2e-docker:
-	docker-compose -p athense2e up --build --exit-code-from=teste2e teste2e
+	docker-compose -p athense2e build --build-arg GOLANG_VERSION=${GOLANG_VERSION} teste2e
+	docker-compose -p athense2e up --exit-code-from=teste2e teste2e
 	docker-compose -p athense2e down
 
 .PHONY: docker

docker-compose.yml

@@ -17,6 +17,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.test
+      args:
+        GOLANG_VERSION: 1.12
     command: ["./scripts/test_unit.sh"]
     environment:
       - GO_ENV=test
@@ -31,6 +33,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.test
+      args:
+        GOLANG_VERSION: 1.12
     command: ["./scripts/test_e2e.sh"]
   azurite:
     image: arafato/azurite:2.6.5