diff --git a/Dockerfile b/Dockerfile
index ad70fdf..2815fd3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -54,10 +54,11 @@ RUN apt-get update && \
     rm -rf /var/lib/apt/lists/*
 
 RUN mkdir -p /app && chown -R ubuntu:ubuntu /app
-USER ubuntu
 
 COPY --chown=ubuntu:ubuntu entrypoint.sh /usr/local/bin/entrypoint.sh
-RUN chmod +x /usr/local/bin/entrypoint.sh
+RUN sed -i 's/\r$//' /usr/local/bin/entrypoint.sh && chmod +x /usr/local/bin/entrypoint.sh
+
+USER ubuntu
 
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
 CMD []
\ No newline at end of file
diff --git a/README.md b/README.md
index 0173e70..00519db 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ Optional: include additional Tesseract languages at build time:
 ```bash
 docker build --build-arg TESSERACT_LANGS="eng spa deu" -t sup2srt .
 ```
+To install all Tesseract languages, use `TESSERACT_LANGS="all"`.
 Language codes: https://github.com/tesseract-ocr/tessdata
 
 ### Run `sup2srt`