From 54580f496c31efde288df25d76a6e587d65e44a1 Mon Sep 17 00:00:00 2001
From: Matthew McPherrin <mmc@squareup.com>
Date: Wed, 14 Aug 2019 14:13:14 -0700
Subject: [PATCH] Add a docker container & run tests there

This is a bit of a weird idea:  We run tests as part of the docker build.
---
 .travis.yml | 17 ++++++-----------
 Dockerfile  | 21 +++++++++++++++++++++
 2 files changed, 27 insertions(+), 11 deletions(-)
 create mode 100644 Dockerfile

diff --git a/.travis.yml b/.travis.yml
index 90dbeeb..e0dd8a1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,19 +5,14 @@ language: go
 go:
   - '1.12.x'
 
-install:
-  - pip install cram --user
-
-before_script:
-  - go vet -v ./...
+services:
+ - docker
 
 script:
-  - GOOS=linux GOARCH=amd64 go build -o certigo-linux-amd64
-  - GOOS=darwin GOARCH=amd64 go build -o certigo-darwin-amd64
-  - GOOS=windows GOARCH=amd64 go build -o certigo-windows-amd64.exe
-  - go test -v ./...
-  - ln -s certigo-linux-amd64 certigo
-  - PATH=$PWD:$PATH cram -v tests/*.t
+  - docker build -f Dockerfile .
+  - GOOS=linux GOARCH=amd64 go build -o certigo-$GOOS-$GOARCH
+  - GOOS=darwin GOARCH=amd64 go build -o certigo-$GOOS-$GOARCH
+  - GOOS=windows GOARCH=amd64 go build -o certigo-$GOOS-$GOARCH
 
 deploy:
   provider: releases
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..d6432d2
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,21 @@
+FROM golang:alpine AS builder
+
+COPY . /src
+WORKDIR /src
+ENV CGO_ENABLED=0
+RUN go build -mod=vendor -o /bin/certigo
+RUN go vet -mod=vendor ./...
+RUN go test -mod=vendor ./...
+
+FROM python
+RUN pip install cram
+
+COPY --from=builder /bin/certigo /bin/certigo
+
+COPY tests /tests
+RUN cram -v /tests/*.t
+
+FROM alpine
+RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
+COPY --from=builder /bin/certigo /bin/certigo
+ENTRYPOINT ["/bin/certigo"]