build: support building inside a container using stacker

Makefile

@@ -42,3 +42,7 @@ binary-container:
 	${CONTAINER_RUNTIME} build ${BUILD_ARGS} -f Dockerfile -t zot:latest .
 	${CONTAINER_RUNTIME} run --rm --security-opt label=disable -v $$(pwd):/go/src/github.com/anuvu/zot \
 		zot:latest make
+
+.PHONY: binary-stacker
+binary-stacker:
+	stacker build --substitute PWD=$$PWD --no-cache

README.md

@@ -17,6 +17,12 @@
 make binary-container
 ```
 
+* Alternatively, build inside a container using [stacker](https://github.com/anuvu/stacker) (preferred)
+
+```
+make binary-stacker
+```
+
 * Build using host's toolchain
 
 ```
@@ -28,7 +34,7 @@ Build artifacts are in bin/
 
 # Running
 
-bin/zot serve _<config>_
+bin/zot serve <config>
 
 # Caveats
 

stacker.yaml

@@ -0,0 +1,16 @@
+build:
+  from:
+    type: docker
+    url: docker://golang:1.12.8
+  binds:
+    - ${{PWD}} -> /go/src/github.com/anuvu/zot
+  run: |
+    export GO111MODULE=on 
+    export GOPATH='/go'
+    export HOME='/root'
+    export PATH='/go/bin:/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
+    go get -u github.com/swaggo/swag/cmd/swag
+    cd /go/src/github.com/anuvu/zot
+    curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s v1.17.1 
+    make
+  build_only: true