Add testing infrastructure

Signed-off-by: Eli Uriegas <eli.uriegas@docker.com>

Jenkinsfile

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+#!groovy
+properties(
+  [
+    buildDiscarder(logRotator(numToKeepStr: '20')),
+    parameters([
+      string(defaultValue: '', description: 'Expected docker version output of --version flag.', name: 'EXPECTED_VERSION'),
+      string(defaultValue: '', description: 'Expected docker gitcommit output of --version flag.', name: 'EXPECTED_GITCOMMIT'),
+    ])
+  ]
+)
+
+def verifyTargets = [
+  'verify-install-centos-7',
+  'verify-install-fedora-24',
+  'verify-install-fedora-25',
+  'verify-install-debian-wheezy',
+  'verify-install-debian-jessie',
+  'verify-install-debian-stretch',
+  'verify-install-ubuntu-trusty',
+  'verify-install-ubuntu-xenial',
+  'verify-install-ubuntu-yakkety',
+  'verify-install-ubuntu-zesty',
+]
+
+def genVerifyJob(String t) {
+  return [ "${t}" : { ->
+    stage("${t}") {
+      wrappedNode(label: 'aufs', cleanWorkspace: true) {
+        checkout scm
+        sh("make clean ${t}.log")
+        archiveArtifacts '*.log'
+      }
+    }
+  } ]
+}
+
+def verifyJobs = [:]
+for (t in verifyTargets) {
+  verifyJobs << genVerifyJob(t)
+}
+
+parallel(verifyJobs)

Makefile

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+SHELL:=/bin/bash
+VERIFY_INSTALL_DISTROS:=$(addprefix verify-install-,centos-7 fedora-24 fedora-25 debian-wheezy debian-jessie debian-stretch ubuntu-trusty ubuntu-xenial ubuntu-yakkety ubuntu-zesty)
+EXPECTED_VERSION?=
+EXPECTED_GITCOMMIT?=
+
+needs_version:
+ifndef EXPECTED_VERSION
+	$(error EXPECTED_VERSION is undefined)
+endif
+
+needs_gitcommit:
+ifndef EXPECTED_GITCOMMIT
+	$(error EXPECTED_GITCOMMIT is undefined)
+endif
+
+check: $(VERIFY_INSTALL_DISTROS)
+
+clean:
+	$(RM) *.log
+
+verify-install-%.log: needs_version needs_gitcommit
+	set -o pipefail && docker run \
+		--rm \
+		-v $(CURDIR):/v \
+		-w /v \
+		$(subst -,:,$*) \
+		bash verify-docker-install "$(EXPECTED_VERSION)" "$(EXPECTED_GITCOMMIT)" | tee $@
+
+# TODO: Add a target for uploading final script to s3

verify-docker-install

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+#!/bin/bash -e
+expected_version=$1
+expected_gitcommit=$2
+(
+	echo "Executing installation script!"
+	sh install.sh
+)
+docker_version=$(docker --version)
+if [ $? -ne 0 ]; then
+	echo "ERROR: Did Docker get installed?"
+	exit 3
+fi
+installed_version=$(echo $docker_version | awk '{print$3}')
+installed_gitcommit=$(echo $docker_version | awk '{print$5}')
+echo $docker_version
+echo -n "Checking if installed version '$installed_version' matches '$expected_version'... "
+if [[ "$installed_version" =~ "$expected_version" ]]; then
+	echo "PASSED!"
+else
+	echo "FAILED!"
+	exit 1
+fi
+echo -n "Checking if installed gitcommit '$installed_gitcommit' matches '$expected_gitcommit'... "
+if [[ "$installed_gitcommit" =~ "$expected_gitcommit" ]]; then
+	echo "PASSED!"
+else
+	echo "FAILED!"
+	exit 2
+fi