Make targets to build os binaries in docker container

.gitignore

@@ -1,4 +1,4 @@
-/spring-config-decryptor
+/spring-config-decryptor*
 /bin
 /dist
 /target

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.13 as builder
+FROM golang:1.14 as builder
 
 ARG MAKE_TARGET="test build"
 

Dockerfile.build

@@ -0,0 +1,9 @@
+FROM golang:1.14 as builder
+
+ARG GOOS=linux
+ARG GOARCH=amd64
+
+WORKDIR "/code"
+ADD . "/code"
+RUN make BINARY=spring-config-decryptor os.build
+RUN cp /code/spring-config-decryptor /spring-config-decryptor

Makefile

@@ -9,12 +9,18 @@ BINARY        ?= spring-config-decryptor
 VERSION       ?= $(shell git describe --tags --always --dirty)
 LDFLAGS       ?= -w -s
 
+GOARCH        ?= amd64
+GOOS          ?= linux
+
 IMAGE         ?= spring-config-decryptor
 TAG           ?= latest
 CLOUD_IMAGE   ?= grepplabs/spring-config-decryptor:$(TAG)
 
 ROOT_DIR      := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
 
+OS_IMAGE      ?= local/$(GOOS)-$(GOARCH)/$(BINARY)
+OS_BIN        ?= $(BINARY)-$(GOOS)-$(GOARCH)
+
 default: build
 
 test:
@@ -23,11 +29,15 @@ test:
 build:
 	CGO_ENABLED=0 GO111MODULE=on go build -mod=vendor -o $(BINARY) $(BUILD_FLAGS) -ldflags "$(LDFLAGS)" .
 
+.PHONY: os.build
+os.build:
+	GOOS=$(GOOS) GOARCH=$(GOARCH) CGO_ENABLED=0 GO111MODULE=on go build -mod=vendor -o $(BINARY) $(BUILD_FLAGS) -ldflags "$(LDFLAGS)" .
+
 fmt:
 	go fmt ./...
 
 clean:
-	@rm -rf $(BINARY)
+	@rm -rf $(BINARY)*
 
 .PHONY: deps
 deps:
@@ -50,6 +60,27 @@ docker.push: docker.build
 	docker tag $(IMAGE) $(CLOUD_IMAGE)
 	docker push $(CLOUD_IMAGE)
 
+.PHONY: os.bin
+os.bin:
+	docker build -t $(OS_IMAGE) --build-arg GOOS=$(GOOS) --build-arg GOARCH=$(GOARCH) -f Dockerfile.build .
+	$(eval BUILDCONTAINER=$(shell sh -c "docker create $(OS_IMAGE)"))
+	$(shell docker cp $(BUILDCONTAINER):/spring-config-decryptor ./$(OS_BIN))
+	$(eval RESULT=$(shell sh -c "docker rm $(BUILDCONTAINER)"))
+	$(eval RESULT=$(shell sh -c "docker rmi $(OS_IMAGE)"))
+	@echo "Binary copied to local directory"
+
+.PHONY: build.linux
+build.linux: clean
+	make GOOS=linux OS_BIN=$(BINARY) os.bin
+
+.PHONY: build.darwin
+build.darwin: clean
+	make GOOS=darwin OS_BIN=$(BINARY) os.bin
+
+.PHONY: build.windows
+build.windows: clean
+	make GOOS=windows OS_BIN=$(BINARY).exe os.bin
+
 tag:
 	git tag $(TAG)
 

README.md

@@ -35,6 +35,21 @@ The secret values are base64 encoded and start with `{cipher}` prefix.
 ## Building
 
     make clean build
+
+## Build in docker
+
+   Linux
+
+        make build.linux
+
+   MacOS
+
+        make build.darwin
+
+   Windows
+
+        make build.windows
+
 
 ## Usage
 

go.mod

@@ -1,5 +1,5 @@
 module github.com/grepplabs/spring-config-decryptor
 
-go 1.13
+go 1.14
 
-require golang.org/x/crypto v0.0.0-20200109152110-61a87790db17
+require golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59

go.sum

@@ -1,6 +1,8 @@
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200109152110-61a87790db17 h1:nVJ3guKA9qdkEQ3TUdXI9QSINo2CUPM/cySEvw2w8I0=
 golang.org/x/crypto v0.0.0-20200109152110-61a87790db17/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59 h1:3zb4D3T4G8jdExgVU/95+vQXfpEPiMdCaZgmGVxjNHM=
+golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

vendor/modules.txt

@@ -1,2 +1,3 @@
-# golang.org/x/crypto v0.0.0-20200109152110-61a87790db17
+# golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59
+## explicit
 golang.org/x/crypto/pbkdf2