chore: slim the worker image and streamline the Docker builds

web/Dockerfile

@@ -5,16 +5,24 @@ COPY web/package.json web/package-lock.json ./
 RUN npm ci
 COPY web/ .
 RUN npm run build \
-    && find dist -type f \( -name '*.html' -o -name '*.js' -o -name '*.css' -o -name '*.svg' -o -name '*.json' -o -name '*.webmanifest' \) -exec gzip -9 -k {} + \
-    && sed "s|@VERSION@|${VERSION}|" nginx/default.conf > /tmp/default.conf
+    && find dist -type f ! -name '*.png' -exec gzip -9 -k {} + \
+    && install -d -m 775 /out/etc/nginx /out/etc/nginx/conf.d \
+    && mkdir -p /out/usr/share/nginx \
+    && sed "s|@VERSION@|${VERSION}|" nginx/default.conf > /out/etc/nginx/conf.d/default.conf \
+    && cp nginx/nginx.conf /out/etc/nginx/nginx.conf \
+    && cp -R nginx/templates /out/etc/nginx/alisten-templates \
+    && mv dist /out/usr/share/nginx/html
+COPY LICENSE /out/usr/share/doc/alisten/
 
 FROM nginxinc/nginx-unprivileged:1.30-alpine
 ENV NGINX_ENTRYPOINT_QUIET_LOGS=1
-COPY web/nginx/nginx.conf /etc/nginx/nginx.conf
-COPY --from=build /tmp/default.conf /etc/nginx/conf.d/default.conf
-COPY --from=build /src/dist /usr/share/nginx/html
-COPY web/nginx/templates /etc/nginx/alisten-templates
-COPY LICENSE /usr/share/doc/alisten/
+COPY --from=build --parents \
+    /out/./etc/nginx/nginx.conf \
+    /out/./etc/nginx/conf.d/default.conf \
+    /out/./etc/nginx/alisten-templates \
+    /out/./usr/share/nginx/html \
+    /out/./usr/share/doc/alisten/LICENSE \
+    /
 EXPOSE 8080 9090
 HEALTHCHECK --start-period=30s --start-interval=1s --interval=10s --timeout=3s --retries=3 \
     CMD wget -q -O /dev/null http://127.0.0.1:9090/healthz || exit 1