ci: build slides via Forgejo Actions runner
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Adds .forgejo/workflows/build-slides.yml triggering on push to main and manual dispatch. Job runs in node:20-bookworm-slim, installs marp-cli + python3, mounts /srv/slides/html into /output, and invokes build-slides.sh with OUTPUT_DIR=/output. build-slides.sh now honors OUTPUT_DIR/SLIDES_TITLE/REPO_WEB_URL env overrides (defaults preserve local-dev behavior), wipes stale .html before each build, and regenerates a styled index.html listing every deck — replacing the equivalent logic from the old webhook update.sh. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Claude
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2 changed files with 67 additions and 9 deletions
29
.forgejo/workflows/build-slides.yml
Normal file
29
.forgejo/workflows/build-slides.yml
Normal file
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@ -0,0 +1,29 @@
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name: Build slides
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on:
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push:
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branches: [main]
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workflow_dispatch:
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jobs:
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build:
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runs-on: self-hosted
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container:
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image: node:20-bookworm-slim
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volumes:
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- /srv/slides/html:/output
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env:
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OUTPUT_DIR: /output
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steps:
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- name: Install build dependencies
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run: |
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set -e
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apt-get update -qq
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apt-get install -y --no-install-recommends git python3 ca-certificates
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npm install -g @marp-team/marp-cli
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- name: Checkout repository
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uses: actions/checkout@v4
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- name: Build slides into /output
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run: bash build-slides.sh
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@ -2,7 +2,14 @@
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set -euo pipefail
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REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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OUTPUT_DIR="$REPO_ROOT/slides"
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OUTPUT_DIR="${OUTPUT_DIR:-$REPO_ROOT/slides}"
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SLIDES_TITLE="${SLIDES_TITLE:-MakerFLOSS Slides}"
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REPO_WEB_URL="${REPO_WEB_URL:-https://forgejo.makerfloss.eu/sjat/MakerFLOSS}"
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mkdir -p "$OUTPUT_DIR"
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# Wipe previously built slides so deleted/de-tagged .md files disappear.
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find "$OUTPUT_DIR" -maxdepth 1 -name "*.html" -delete
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# Find all markdown files with marp: true frontmatter
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SLIDES=()
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@ -18,7 +25,7 @@ fi
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echo "Found ${#SLIDES[@]} presentation(s):"
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printf ' %s\n' "${SLIDES[@]}"
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# Create temp output directory for Docker
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# Create temp output directory for Docker fallback
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TEMP_OUTPUT=$(mktemp -d)
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chmod 777 "$TEMP_OUTPUT"
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trap "rm -rf '$TEMP_OUTPUT'" EXIT
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@ -27,7 +34,6 @@ if command -v marp &>/dev/null; then
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marp --html --output "$OUTPUT_DIR/" "${SLIDES[@]}"
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else
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echo "marp not found locally — using Docker (marpteam/marp-cli)..."
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# Process each slide individually in Docker
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for slide in "${SLIDES[@]}"; do
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REL_SLIDE="${slide#${REPO_ROOT}/}"
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BASENAME=$(basename "${slide%.*}")
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@ -36,13 +42,8 @@ else
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-v "$TEMP_OUTPUT":/home/marp/output \
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marpteam/marp-cli --html --output "/home/marp/output/${BASENAME}.html" "$REL_SLIDE"
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done
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fi
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# Ensure output directory exists
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mkdir -p "$OUTPUT_DIR"
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# Copy generated HTML files to final output directory
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cp "$TEMP_OUTPUT"/*.html "$OUTPUT_DIR/" 2>/dev/null || true
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fi
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# Inject mermaid.js into any HTML that contains mermaid code blocks.
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# Marp emits fenced mermaid blocks as <pre><code class="language-mermaid">.
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@ -90,4 +91,32 @@ else
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echo "Warning: python3 not found — skipping mermaid injection"
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fi
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# Regenerate index.html listing every built deck.
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INDEX="$OUTPUT_DIR/index.html"
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{
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printf '<!DOCTYPE html><html lang="en"><head><meta charset="utf-8">'
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printf '<meta name="viewport" content="width=device-width,initial-scale=1">'
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printf '<title>%s</title>' "$SLIDES_TITLE"
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printf '<style>'
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printf 'body{font-family:sans-serif;max-width:700px;margin:3rem auto;padding:0 1.5rem;background:#fafafa;}'
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printf 'h1{font-size:1.6rem;margin-bottom:.25rem;}p.sub{color:#666;margin-top:0;}'
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printf 'ul{list-style:none;padding:0;margin-top:2rem;}'
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printf 'li{border:1px solid #e0e0e0;border-radius:6px;margin:.75rem 0;background:#fff;}'
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printf 'li a{display:block;padding:1rem 1.25rem;text-decoration:none;color:#1a1a1a;font-size:1.05rem;}'
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printf 'li a:hover{background:#f0f4ff;border-radius:6px;}'
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printf 'footer{margin-top:3rem;color:#aaa;font-size:.8rem;}'
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printf '</style></head><body>'
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printf '<h1>%s</h1>' "$SLIDES_TITLE"
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printf '<p class="sub">Built from <a href="%s">%s</a></p>' \
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"$REPO_WEB_URL" "${REPO_WEB_URL#https://}"
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printf '<ul>'
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find "$OUTPUT_DIR" -maxdepth 1 -name "*.html" ! -name "index.html" | sort | while IFS= read -r html; do
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name=$(basename "$html" .html)
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printf '<li><a href="%s">%s</a></li>' "$(basename "$html")" "$name"
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done
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printf '</ul>'
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printf '<footer>Last built: %s · <a href="https://marp.app">Marp</a></footer>' "$(date -Iseconds)"
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printf '</body></html>'
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} > "$INDEX"
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echo "Done — slides in $OUTPUT_DIR/"
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