Release process for building tiny docker images

Author: lox

.dockerignore

@@ -1,2 +1,3 @@
 .aptcache
-apt-proxy
+apt-proxy
+release/*

.gitignore

@@ -1,2 +1,3 @@
 .aptcache
 apt-proxy
+last-cid

Dockerfile

@@ -1,13 +1,13 @@
 FROM ubuntu:14.10
 
 RUN apt-get update
-RUN apt-get install -y golang git
+RUN apt-get install -y golang
 
-ENV GOPATH /app
-ADD . /app/src/github.com/lox/apt-proxy
+RUN mkdir -p /go
+ENV GOPATH /go
+ENV GOBIN /go/bin
+ADD . /go/src/github.com/lox/apt-proxy
 
-WORKDIR /app/src/github.com/lox/apt-proxy
-RUN go get
-
-EXPOSE 8080
-CMD ["go", "run", "/app/src/github.com/lox/apt-proxy/apt-proxy.go"]
+EXPOSE 3142
+WORKDIR /go/src/github.com/lox/apt-proxy
+CMD ["go", "run", "/go/src/github.com/lox/apt-proxy/apt-proxy.go"]

README.md

@@ -1,12 +1,35 @@
 # Apt Proxy
 
-A caching proxy specifically for apt package caching, also rewrites to the fastest local mirror.
+A caching proxy specifically for apt package caching, also rewrites to the fastest local mirror. Built as a tiny docker image for easy deployment.
 
 Built because [apt-cacher-ng](https://www.unix-ag.uni-kl.de/~bloch/acng/) is unreliable.
 
 ## Running via Go
 
-```
+```bash
 go install github.com/lox/apt-proxy
 $GOBIN/apt-proxy
-```
+```
+
+## Running in Docker for Development
+
+```bash
+docker build --rm --tag=apt-proxy-dev .
+docker run -it --rm --publish=3142 apt-proxy-dev
+```
+
+## Building in Docker for Release
+
+```bash
+docker build --rm --tag=apt-proxy-dev .
+docker run -it --cidfile last-cid apt-proxy-dev ./build.sh
+docker cp $(cat last-cid):/apt-proxy release/
+docker build --tag=apt-proxy ./release
+rm last-cid
+```
+
+## Running from Docker
+
+```
+docker run -it --rm --publish=3142 lox24/apt-proxy
+```

build.sh

@@ -0,0 +1,2 @@
+#!/bin/bash -ex
+go build -o /apt-proxy .

release/Dockerfile

@@ -0,0 +1,4 @@
+FROM progrium/busybox
+ADD apt-proxy /apt-proxy
+EXPOSE 3142
+CMD ["/apt-proxy"]