Add CI.

.drone.yml

@@ -0,0 +1,11 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+  - name: quality
+    image: git.golem.linux.it/golem/vpnunit-develop:1
+    commands:
+      - script/qa
+

Dockerfile.develop

@@ -0,0 +1,5 @@
+FROM python:3
+
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+

README.md

@@ -80,4 +80,6 @@ while [ true ]; do
 	sleep 60
 done
 ```
-
+# Develop
+`Dockerfile.develop` contains instructions to build a container for assessing this project's quality, and `script/qa` is automatically run inside that container by the CI system.
+Give a look at it.

docker

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+REPODIR=$(realpath $(dirname "$0"))
+
+docker run --rm -ti            \
+    -v "$REPODIR":/workspace   \
+    -v /tmp:/tmp               \
+    -w /workspace              \
+    git.golem.linux.it/golem/vpnunit-develop:1 \
+    "$@"
+

script/setup

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+REPODIR=$(realpath $(dirname "$0")/..)
+
+docker build -t git.golem.linux.it/golem/vpnunit-develop:1 -f "$REPODIR"/Dockerfile.develop "$REPODIR"
+