Optimize Dockerfile: combine RUN commands, clear caches, add .dockerignore

- Combine apt-get update and install into single RUN with cache clearing
- Remove APT lists after installation
- Add --no-cache-dir to pip install
- Add --prefer-offline --no-audit to npm install
- Create .dockerignore to exclude unnecessary files from build context
- Update docker-publish.yml workflow to tag images with release names
- Ensure buildx caching is used (type=gha)

Dockerfile

@@ -1,20 +1,25 @@
 FROM debian:13.4
 
-RUN apt-get update
-RUN apt-get install -y nodejs npm python3 python3-pip ripgrep ffmpeg gcc python3-dev libffi-dev
+# Install system dependencies in one layer, clear APT cache
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        nodejs npm python3 python3-pip ripgrep ffmpeg gcc python3-dev libffi-dev && \
+    rm -rf /var/lib/apt/lists/*
 
 COPY . /opt/hermes
 WORKDIR /opt/hermes
 
-RUN pip install -e ".[all]" --break-system-packages
-RUN npm install
-RUN npx playwright install --with-deps chromium
+# Install Python and Node dependencies in one layer, no cache
+RUN pip install --no-cache-dir -e ".[all]" --break-system-packages && \
+    npm install --prefer-offline --no-audit && \
+    npx playwright install --with-deps chromium
+
 WORKDIR /opt/hermes/scripts/whatsapp-bridge
-RUN npm install
+RUN npm install --prefer-offline --no-audit
 
 WORKDIR /opt/hermes
 RUN chmod +x /opt/hermes/docker/entrypoint.sh
 
 ENV HERMES_HOME=/opt/data
 VOLUME [ "/opt/data" ]
-ENTRYPOINT [ "/opt/hermes/docker/entrypoint.sh" ]
+ENTRYPOINT [ "/opt/hermes/docker/entrypoint.sh" ]