ci: Add Jenkins pipeline

ci/Dockerfile

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+FROM fedora:28
+
+RUN dnf install -y \
+	openssh-clients \
+	python3-pip \
+	python3-wheel \
+	rsync
+
+RUN useradd -l -u 3000018 -d /var/lib/jenkins jenkins

ci/Jenkinsfile

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+pipeline {
+    agent {
+        dockerfile {
+            dir 'ci'
+        }
+    }
+
+    triggers {
+        pollSCM ''
+    }
+
+    environment {
+        PUBLISH_HOST = 'web0.pyrocufflink.blue'
+        PUBLISH_USER = 'webapp.dcow'
+    }
+
+    stages {
+        stage('Publish') {
+            steps {
+                sh 'pip3 wheel -w dist .'
+                sshagent(['jenkins-web']) {
+                    sh "ssh -oStrictHostKeyChecking=no ${PUBLISH_USER}@${PUBLISH_HOST} :"
+                    sh '. ci/publish.sh'
+                }
+            }
+        }
+    }
+}

ci/publish.sh

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+#!/bin/sh
+
+rsync -rti dist/ ${PUBLISH_USER}@${PUBLISH_HOST}:wheelhouse \
+	--include '*.whl' --exclude '**'
+ssh ${PUBLISH_USER}@${PUBLISH_HOST} \
+	venv/bin/pip install --no-index -f wheelhouse DarkChestOfWonders