enable drone ci

.drone.yml

@@ -0,0 +1,60 @@
+---
+kind: pipeline
+type: docker
+name: testing
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: test
+  image: bats/bats
+  commands:
+  - bats ./wait-for.bats
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/tags/**
+  - refs/pull/**
+
+---
+kind: pipeline
+type: docker
+name: notification
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: matrix
+  image: plugins/matrix
+  settings:
+    homeserver:
+      from_secret: matrix_homeserver
+    password:
+      from_secret: matrix_password
+    roomid:
+      from_secret: matrix_roomid
+    template: "Status: **{{ build.status }}**<br/> Build: [{{ repo.Owner }}/{{ repo.Name }}]({{ build.link }}) ({{ build.branch }}) by {{ build.author }}<br/> Message: {{ build.message }}"
+    username:
+      from_secret: matrix_username
+
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/tags/**
+  status:
+  - success
+  - failure
+
+depends_on:
+- testing
+
+---
+kind: signature
+hmac: 495a8f60228b02351858fb8226da326dfacb1cfb3a749143a3d89218782e335b
+
+...

Dockerfile

@@ -1,11 +0,0 @@
-FROM node:alpine
-
-RUN apk add --no-cache bash
-
-RUN mkdir -p /app
-WORKDIR /app
-
-COPY . /app
-RUN npm install
-
-CMD ./node_modules/.bin/bats wait-for.bats

README.md

@@ -1,5 +1,8 @@
 # wait-for
 
+[![Build Status](https://img.shields.io/drone/build/xoxys/wait-for?logo=drone)](https://cloud.drone.io/xoxys/wait-for)
+[![License: MIT](https://img.shields.io/github/license/xoxys/wait-for)](LICENSE)
+
 `./wait-for` is a script designed to synchronize services like docker containers. It is [sh](https://en.wikipedia.org/wiki/Bourne_shell) and [alpine](https://alpinelinux.org/) compatible. It was inspired by [vishnubob/wait-for-it](https://github.com/vishnubob/wait-for-it), but the core has been rewritten at [Eficode](http://eficode.com/) by [dsuni](https://github.com/dsuni) and [mrako](https://github.com/mrako).
 
 When using this tool, you only need to pick the `wait-for` file as part of your project.
@@ -44,15 +47,6 @@ services:
       - db
 ```
 
-## Testing
-
-Ironically testing is done using [bats](https://github.com/sstephenson/bats), which on the other hand is depending on [bash](https://en.wikipedia.org/wiki/Bash_(Unix_shell)).
-
-```Shell
-docker build -t wait-for .
-docker run -t wait-for
-```
-
 ### License
 
 This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.