feat: add public site publish workflow for direct web access

.gitea/workflows/publish-site.yml

@@ -0,0 +1,88 @@
+name: publish-site
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - site/**
+      - install/**
+      - README.md
+      - .gitea/workflows/publish-site.yml
+
+jobs:
+  deploy-public-site:
+    runs-on: self-hosted
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Resolve host and site dir
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p .tmp
+
+          PUBLIC_HOST="${PUBLIC_HOST:-}"
+          if [ -z "$PUBLIC_HOST" ]; then
+            PUBLIC_HOST="$(hostname -I 2>/dev/null | awk '{print $1}' || true)"
+          fi
+          if [ -z "$PUBLIC_HOST" ]; then
+            PUBLIC_HOST="$(hostname)"
+          fi
+
+          SITE_DIR="/tmp/devops-skills-site"
+          rm -rf "$SITE_DIR"
+          mkdir -p "$SITE_DIR"
+          cp -r site/* "$SITE_DIR"/
+
+          echo "PUBLIC_HOST=$PUBLIC_HOST" >> "$GITHUB_ENV"
+          echo "SITE_DIR=$SITE_DIR" >> "$GITHUB_ENV"
+          echo "SITE_URL=http://${PUBLIC_HOST}:8098/" >> "$GITHUB_ENV"
+
+      - name: Deploy with docker or python fallback
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          if command -v docker >/dev/null 2>&1 && docker info >/dev/null 2>&1; then
+            docker rm -f devops-skills-site >/dev/null 2>&1 || true
+            docker run -d \
+              --name devops-skills-site \
+              --restart unless-stopped \
+              -p 8098:80 \
+              -v "${SITE_DIR}":/usr/share/nginx/html:ro \
+              nginx:alpine >/dev/null
+            echo "DEPLOY_MODE=docker" >> "$GITHUB_ENV"
+            exit 0
+          fi
+
+          PY_CMD=""
+          if command -v python3 >/dev/null 2>&1; then
+            PY_CMD="python3"
+          elif command -v python >/dev/null 2>&1; then
+            PY_CMD="python"
+          else
+            echo "Neither docker nor python available on runner."
+            exit 1
+          fi
+
+          pkill -f "http.server 8098" >/dev/null 2>&1 || true
+          nohup "$PY_CMD" -m http.server 8098 --bind 0.0.0.0 --directory "${SITE_DIR}" >/tmp/devops-skills-site.log 2>&1 &
+          sleep 2
+          echo "DEPLOY_MODE=python-http-server" >> "$GITHUB_ENV"
+
+      - name: Verify local endpoint
+        shell: bash
+        run: |
+          set -euo pipefail
+          curl -fsS "http://127.0.0.1:8098/" >/dev/null
+          echo "Site deployed"
+          echo "Mode: ${DEPLOY_MODE}"
+          echo "URL: ${SITE_URL}"
+
+      - name: Output public url
+        shell: bash
+        run: |
+          echo "Public URL: ${SITE_URL}"