From 3fb9fadfb1bccad48ddf7b9a26e46c2943b40cf1 Mon Sep 17 00:00:00 2001
From: "Stephen McQuay (smcquay)" <stephen@mcquay.me>
Date: Tue, 17 Apr 2018 11:58:40 -0700
Subject: [PATCH] implements builder pattern for lim

---
 .gitignore       |  1 +
 Dockerfile       |  8 ++++++++
 Dockerfile.build |  7 +++++++
 Makefile         | 19 +++++++++++++++++++
 4 files changed, 35 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Dockerfile
 create mode 100644 Dockerfile.build
 create mode 100644 Makefile

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..378eac2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..186137b
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,8 @@
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /
+
+COPY build/lim /bin/
+
+CMD ["/bin/sh", "-c", "cat /dev/urandom | /bin/lim 16b | xxd"]
diff --git a/Dockerfile.build b/Dockerfile.build
new file mode 100644
index 0000000..dd87bcc
--- /dev/null
+++ b/Dockerfile.build
@@ -0,0 +1,7 @@
+FROM golang:1.10.1
+
+WORKDIR /go/src/mcquay.me/lim
+
+COPY . .
+
+RUN CGO_ENABLED=0 GOOS=linux go build -o /usr/local/bin/lim .
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..47dcc99
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,19 @@
+GOFILES := $(shell find . -type f | grep go$$ )
+
+build/lim: build ${GOFILES}
+	docker build -t smcquay/lim:build . -f Dockerfile.build
+	docker create --name ext smcquay/lim:build
+	docker cp ext:/usr/local/bin/lim build/
+	docker rm -f ext
+	docker image rm smcquay/lim:build
+
+build:
+	@mkdir build
+
+.PHONY: docker-image
+docker-image: build/lim
+	docker build --no-cache -t smcquay/lim:latest  .
+
+.PHONY: clean
+clean:
+	@rm -rf build