lock go-version. installing make. fix copy command? add GOPATH

.github/workflows/build.yaml

@@ -62,6 +62,7 @@ jobs:
     runs-on: macos-latest
     env:
       PROJECT_PATH: /go/src/github.com/analogj/scrutiny
+      GOPATH: /go
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -69,7 +70,7 @@ jobs:
         uses: vmactions/freebsd-vm@v0.1.3
         with:
           usesh: true
-          prepare: pkg install -y curl go
+          prepare: pkg install -y curl go-1.13.4,1 gmake
           run: |
             pwd
             ls -lah
@@ -78,9 +79,9 @@ jobs:
             freebsd-version
 
             mkdir -p $(dirname "$PROJECT_PATH")
-            cp -a $GITHUB_WORKSPACE $PROJECT_PATH
+            cp -R $GITHUB_WORKSPACE $PROJECT_PATH
             cd $PROJECT_PATH
 
-            make freebsd/amd64 freebsd/386
+            make freebsd/amd64