Fixes #3860 - Add publishing of SNAPSHOT version of documentation

.github/workflows/build.yml

@@ -177,3 +177,4 @@ jobs:
         git add .
         git commit -a -m "Publishing Maven plugin documentation" || true
         git push
+

.github/workflows/docs-snapshot.yml

@@ -0,0 +1,42 @@
+name: docs-snapshot
+on: 
+  push:
+    paths:
+      - 'docs/**'
+    branches:
+      - 'current'
+    tags-ignore:
+      - 'v*'
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout Piranha
+      uses: actions/checkout@v3
+    - name: Checkout Piranha Website
+      uses: actions/checkout@v3
+      with:
+        repository: piranhacloud/piranha-website
+        token: ${{ secrets.GIT_PASSWORD }}
+        path: piranha-website
+        ref: 'gh-pages'
+    - name: Set up Java 21
+      uses: actions/setup-java@v3
+      with:
+        cache: 'maven'
+        distribution: 'temurin'
+        java-version: 21
+    - name: Build with Maven
+      run: |
+        cd docs
+        mvn -B -DskipTests -DskipITs -ntp site
+        cd ../
+        rm -rf piranha-website/snapshot || true
+        mkdir -p piranha-website/snapshot || true
+        cp -R docs/target/site/* piranha-website/snapshot/
+        cd piranha-website
+        git config --global user.email "noreply@piranha.cloud"
+        git config --global user.name "Automated publish"
+        git add .
+        git commit -a -m "Publishing documentation" || true
+        git push

docs/pom.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+        <groupId>cloud.piranha</groupId>
+        <version>24.9.0-SNAPSHOT</version>
+
+    <artifactId>doc</artifactId>
+    <packaging>pom</packaging>
+
+    <name>Piranha</name>
+
+</project>