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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>
This commit is contained in:
Claude 2026-05-17 17:24:34 +02:00
parent c6a284ee1f
commit 90598056d4
2 changed files with 67 additions and 9 deletions
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29
.forgejo/workflows/build-slides.yml Normal file
View file

@ -0,0 +1,29 @@
name: Build slides
on:
push:
branches: [main]
workflow_dispatch:
jobs:
build:
runs-on: self-hosted
container:
image: node:20-bookworm-slim
volumes:
- /srv/slides/html:/output
env:
OUTPUT_DIR: /output
steps:
- name: Install build dependencies
run: |
set -e
apt-get update -qq
apt-get install -y --no-install-recommends git python3 ca-certificates
npm install -g @marp-team/marp-cli
- name: Checkout repository
uses: actions/checkout@v4
- name: Build slides into /output
run: bash build-slides.sh

47
build-slides.sh
View file

@ -2,7 +2,14 @@
set -euo pipefail set -euo pipefail
REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
OUTPUT_DIR="$REPO_ROOT/slides" OUTPUT_DIR="${OUTPUT_DIR:-$REPO_ROOT/slides}"
SLIDES_TITLE="${SLIDES_TITLE:-MakerFLOSS Slides}"
REPO_WEB_URL="${REPO_WEB_URL:-https://forgejo.makerfloss.eu/sjat/MakerFLOSS}"
mkdir -p "$OUTPUT_DIR"
# Wipe previously built slides so deleted/de-tagged .md files disappear.
find "$OUTPUT_DIR" -maxdepth 1 -name "*.html" -delete
# Find all markdown files with marp: true frontmatter # Find all markdown files with marp: true frontmatter
SLIDES=() SLIDES=()
@ -18,7 +25,7 @@ fi
echo "Found ${#SLIDES[@]} presentation(s):" echo "Found ${#SLIDES[@]} presentation(s):"
printf ' %s\n' "${SLIDES[@]}" printf ' %s\n' "${SLIDES[@]}"
# Create temp output directory for Docker # Create temp output directory for Docker fallback
TEMP_OUTPUT=$(mktemp -d) TEMP_OUTPUT=$(mktemp -d)
chmod 777 "$TEMP_OUTPUT" chmod 777 "$TEMP_OUTPUT"
trap "rm -rf '$TEMP_OUTPUT'" EXIT trap "rm -rf '$TEMP_OUTPUT'" EXIT
@ -27,7 +34,6 @@ if command -v marp &>/dev/null; then
marp --html --output "$OUTPUT_DIR/" "${SLIDES[@]}" marp --html --output "$OUTPUT_DIR/" "${SLIDES[@]}"
else else
echo "marp not found locally — using Docker (marpteam/marp-cli)..." echo "marp not found locally — using Docker (marpteam/marp-cli)..."
# Process each slide individually in Docker
for slide in "${SLIDES[@]}"; do for slide in "${SLIDES[@]}"; do
REL_SLIDE="${slide#${REPO_ROOT}/}" REL_SLIDE="${slide#${REPO_ROOT}/}"
BASENAME=$(basename "${slide%.*}") BASENAME=$(basename "${slide%.*}")
@ -36,13 +42,8 @@ else
-v "$TEMP_OUTPUT":/home/marp/output \ -v "$TEMP_OUTPUT":/home/marp/output \
marpteam/marp-cli --html --output "/home/marp/output/${BASENAME}.html" "$REL_SLIDE" marpteam/marp-cli --html --output "/home/marp/output/${BASENAME}.html" "$REL_SLIDE"
done done
fi
# Ensure output directory exists
mkdir -p "$OUTPUT_DIR"
# Copy generated HTML files to final output directory
cp "$TEMP_OUTPUT"/*.html "$OUTPUT_DIR/" 2>/dev/null || true cp "$TEMP_OUTPUT"/*.html "$OUTPUT_DIR/" 2>/dev/null || true
fi
# Inject mermaid.js into any HTML that contains mermaid code blocks. # Inject mermaid.js into any HTML that contains mermaid code blocks.
# Marp emits fenced mermaid blocks as <pre><code class="language-mermaid">. # Marp emits fenced mermaid blocks as <pre><code class="language-mermaid">.
@ -90,4 +91,32 @@ else
echo "Warning: python3 not found — skipping mermaid injection" echo "Warning: python3 not found — skipping mermaid injection"
fi fi
# Regenerate index.html listing every built deck.
INDEX="$OUTPUT_DIR/index.html"
{
printf '<!DOCTYPE html><html lang="en"><head><meta charset="utf-8">'
printf '<meta name="viewport" content="width=device-width,initial-scale=1">'
printf '<title>%s</title>' "$SLIDES_TITLE"
printf '<style>'
printf 'body{font-family:sans-serif;max-width:700px;margin:3rem auto;padding:0 1.5rem;background:#fafafa;}'
printf 'h1{font-size:1.6rem;margin-bottom:.25rem;}p.sub{color:#666;margin-top:0;}'
printf 'ul{list-style:none;padding:0;margin-top:2rem;}'
printf 'li{border:1px solid #e0e0e0;border-radius:6px;margin:.75rem 0;background:#fff;}'
printf 'li a{display:block;padding:1rem 1.25rem;text-decoration:none;color:#1a1a1a;font-size:1.05rem;}'
printf 'li a:hover{background:#f0f4ff;border-radius:6px;}'
printf 'footer{margin-top:3rem;color:#aaa;font-size:.8rem;}'
printf '</style></head><body>'
printf '<h1>%s</h1>' "$SLIDES_TITLE"
printf '<p class="sub">Built from <a href="%s">%s</a></p>' \
"$REPO_WEB_URL" "${REPO_WEB_URL#https://}"
printf '<ul>'
find "$OUTPUT_DIR" -maxdepth 1 -name "*.html" ! -name "index.html" | sort | while IFS= read -r html; do
name=$(basename "$html" .html)
printf '<li><a href="%s">%s</a></li>' "$(basename "$html")" "$name"
done
printf '</ul>'
printf '<footer>Last built: %s &middot; <a href="https://marp.app">Marp</a></footer>' "$(date -Iseconds)"
printf '</body></html>'
} > "$INDEX"
echo "Done — slides in $OUTPUT_DIR/" echo "Done — slides in $OUTPUT_DIR/"