Fix noVNC entrypoint format handling and DISPLAY warning

Dockerfile.novnc

@@ -20,6 +20,8 @@ RUN pip install --no-cache-dir -r /app/requirements.txt
 COPY main.py /app/main.py
 COPY README.md /app/README.md
 COPY scripts/start-novnc-configure.sh /app/scripts/start-novnc-configure.sh
-RUN chmod +x /app/scripts/start-novnc-configure.sh
+RUN sed -i '1s/^\xEF\xBB\xBF//' /app/scripts/start-novnc-configure.sh \
+    && sed -i 's/\r$//' /app/scripts/start-novnc-configure.sh \
+    && chmod +x /app/scripts/start-novnc-configure.sh
 
-ENTRYPOINT ["/app/scripts/start-novnc-configure.sh"]
+ENTRYPOINT ["bash", "/app/scripts/start-novnc-configure.sh"]

docker-compose.yml

@@ -26,7 +26,7 @@
     shm_size: "1gb"
     profiles: ["configure"]
     environment:
-      - DISPLAY=${DISPLAY}
+      - DISPLAY=${DISPLAY:-}
     volumes:
       - /tmp/.X11-unix:/tmp/.X11-unix
       - ./state:/root/.amazon_invoice_downloader