ci: Begin Jenkins pipeline

This is a very simple pipeline that consists of 3 steps:

1. Download the Hugo binary from Github (if necessary)
2. Run `hugo`
3. Publish the generated site with `rsync`

.gitignore

@@ -1,2 +1,6 @@
+/hugo
+/hugo-*
+/hugo_*.tar.gz
+/hugo_*_checksums.txt
 /public/
 /resources/_gen/

ci/Jenkinsfile

@@ -0,0 +1,33 @@
+pipeline {
+    agent any
+
+    options {
+        disableConcurrentBuilds()
+    }
+
+    triggers {
+        pollSCM ''
+    }
+
+    stages {
+        stage('Prepare') {
+            steps {
+                sh '. ci/prepare.sh'
+            }
+        }
+
+        stage('Build') {
+            steps {
+                sh '. ci/build.sh'
+            }
+        }
+
+        stage('Publish') {
+            steps {
+                sshagent(['jenkins-web']) {
+                    sh '. ci/publish.sh'
+                }
+            }
+        }
+    }
+}

ci/build.sh

@@ -0,0 +1,5 @@
+# Remove unnecessary Cloudflare CSS
+# https://github.com/rhazdon/hugo-theme-hello-friend-ng/issues/41
+sed -i -e '/cloudflare/,+2d' themes/hello-friend-ng/layouts/partials/head.html
+
+./hugo

ci/prepare.sh

@@ -0,0 +1,30 @@
+HUGO_VERSION=0.66.0
+case $(uname -m) in
+i[23456]86)
+    HUGO_ARCH=32bit
+    ;;
+x86_64)
+    HUGO_ARCH=64bit
+    ;;
+aarch64)
+    HUGO_ARCH=ARM64
+    ;;
+armv7*)
+    HUGO_ARCH=ARM
+    ;;
+esac
+
+HUGO_TAR=hugo_${HUGO_VERSION}_Linux-${HUGO_ARCH}.tar.gz
+HUGO_BASE_URL=https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}
+HUGO_TAR_URL=${HUGO_BASE_URL}/${HUGO_TAR}
+HUGO_CHECKSUM_URL=${HUGO_BASE_URL}/hugo_${HUGO_VERSION}_checksums.txt
+
+if [ ! -f hugo-${HUGO_VERSION} ]; then
+    rm -f ${HUGO_TAR} hugo_${HUGO_VERSION}_checksums.txt
+    curl -fJL -O "${HUGO_CHECKSUM_URL}" -O "${HUGO_TAR_URL}"
+    grep ${HUGO_TAR} hugo_${HUGO_VERSION}_checksums.txt | sha256sum -c
+    tar -xzOf ${HUGO_TAR} hugo > hugo-${HUGO_VERSION}
+    chmod +x hugo-${HUGO_VERSION}
+fi
+
+ln -sf hugo-${HUGO_VERSION} hugo

ci/publish.sh

@@ -0,0 +1,5 @@
+: ${PUBLISH_USER:=webapp.chmod777}
+: ${PUBLISH_HOST:=web0.pyrocufflink.blue}
+: ${PUBLISH_PATH:=htdocs}
+
+rsync -rti public/ ${PUBLISH_USER}@${PUBLISH_HOST}:${PUBLISH_PATH}