Fix spelling
diff --git a/docker/linux/Dockerfile b/docker/linux/Dockerfile
index 9265611..407f892 100644
--- a/docker/linux/Dockerfile
+++ b/docker/linux/Dockerfile
@@ -123,7 +123,7 @@
libusb-1.0
RUN git clone --depth 1 --shallow-submodules --recursive https://github.com/espressif/esp-idf.git
-# This is unfortunatly going to re-download some of the same toolchains, but will only be used in the context of esp-idf
+# This is unfortunately going to re-download some of the same toolchains, but will only be used in the context of esp-idf
RUN sed -i "s/^gdbgui.*/gdbgui==0.13.2.0/" esp-idf/requirements.txt
RUN bash -c "\
cd esp-idf && \
