feat(template): added support for custom Docker file template

index.js

@@ -24,19 +24,28 @@ if (process.env.DOCKER_HOST === undefined) {
 }
 
 // CONFIG
-const DOCKER_PROTOCOL = 'https'
-const parsed_url = url.parse(process.env.DOCKER_HOST)
-const DOCKER_HOST = parsed_url.hostname
-const DOCKER_PORT = parsed_url.port
-const CERT_PATH = process.env.DOCKER_CERT_PATH
-const DOCKERFILE_TEMPLATE = `
-FROM mhart/alpine-node:$VERSION
+function getDockerTemplate() {
+  const DockerTemplateFile = join(process.cwd(), 'DockerTemplate')
+  if (fs.existsSync(DockerTemplateFile)) {
+    console.log('Using docker template file', DockerTemplateFile)
+    return fs.readFileSync(DockerTemplateFile, 'utf8')
+  }
+  const DEFAULT_DOCKER_TEMPLATE = `FROM mhart/alpine-node:$VERSION
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 COPY package.json .
 RUN npm install
 COPY . .
 `
+  return DEFAULT_DOCKER_TEMPLATE
+}
+
+const DOCKER_PROTOCOL = 'https'
+const parsed_url = url.parse(process.env.DOCKER_HOST)
+const DOCKER_HOST = parsed_url.hostname
+const DOCKER_PORT = parsed_url.port
+const CERT_PATH = process.env.DOCKER_CERT_PATH
+const DOCKERFILE_TEMPLATE = getDockerTemplate()
 
 const DIRECTORY_TO_TEST = process.cwd()
 const TEST_COMMAND = ['npm', 'test']

readme.md

@@ -32,3 +32,24 @@ In `package.json`:
 	"prepublish": "autochecker 0.10 0.12 4.0 5.0"
 }
 ```
+
+## Custom Docker file template
+
+You can specify custom Docker file template if you need additional tools installed, for
+example if you need `git`, create a file in the project `DockerTemplate` with the following
+
+```
+FROM mhart/alpine-node:$VERSION
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+COPY package.json .
+# Adding extra tools
+RUN apk add --update git
+RUN npm install
+COPY . .
+```
+
+Variable `$VERSION` will be replaced by autochecker. More information about alpine images
+and additional tools at 
+[docker-alpine](https://github.com/gliderlabs/docker-alpine/blob/master/docs/usage.md) and
+[alpine-node](https://github.com/mhart/alpine-node).