Add makefile and build script

Binary will be build in corresponding GOOS-GOARCH folder.

Install command will build and install binary for current platform until
GOOS and/or GOARCH env var is set.

Makefile

@@ -0,0 +1,21 @@
+ifndef VERBOSE
+.SILENT:
+endif
+
+all: binary
+
+.PHONY: fmt
+fmt:
+	sh ./scripts/build.sh fmt
+
+.PHONY: clean
+clean:
+	sh ./scripts/build.sh clean
+
+.PHONY: binary
+binary:
+	sh ./scripts/build.sh build
+
+.PHONY: install
+install:
+	sh ./scripts/build.sh install

scripts/build.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+set -eu
+
+TARGET=${TARGET:-"target"}
+
+GOOS="$(go env GOOS)"
+GOARCH="$(go env GOARCH)"
+
+TARGET="$TARGET/${GOOS}-${GOARCH}/docker-pps"
+if [ "${GOOS}" = "windows" ]; then
+    TARGET="${TARGET}.exe"
+fi
+
+case "$1" in
+  fmt)
+    go fmt $(go list)
+  ;;
+  clean)
+    rm -rf ./target
+  ;;
+  build)
+    go build -o "${TARGET}"
+  ;;
+  install)
+    go install
+  ;;
+  *)
+    echo "Usage: $0 {fmt|clean|build|install}"
+    exit 1
+esac
+