diff --git a/pico-sensor/dockerfile b/pico-sensor/Dockerfile
similarity index 96%
rename from pico-sensor/dockerfile
rename to pico-sensor/Dockerfile
index 1163773..47ddeae 100644
--- a/pico-sensor/dockerfile
+++ b/pico-sensor/Dockerfile
@@ -70,7 +70,7 @@ RUN \
 ENV PICO_SDK_PATH=/apps/pico-sdk/
 
 # Patch the SDK for semihosting file I/O (needed for gcov)
-COPY newlib_interface.c.patched      ${PICO_SDK_PATH}/src/rp2_common/pico_clib_interface/newlib_interface.c
+COPY ./pico-sensor/newlib_interface.c.patched      ${PICO_SDK_PATH}/src/rp2_common/pico_clib_interface/newlib_interface.c
 
 # Build picotool so we don't have to build it for the project
 RUN \