Dockerfile numpy install

Dockerfile

@@ -34,6 +34,18 @@ ENV OPENSSL_LIB_DIR="/usr/lib/arm-linux-gnueabihf"
 ENV OPENSSL_INCLUDE_DIR="/usr/include/openssl"
 # Additional environment variables for cryptography Rust build
 ENV CRYPTOGRAPHY_DONT_BUILD_RUST=1
+
+# Install numpy first - required for building scikit-image on ARM
+RUN --mount=type=cache,id=pip,sharing=locked,target=/tmp/pip-cache \
+  pip install \
+  --prefer-binary \
+  --extra-index-url https://www.piwheels.org/simple \
+  --extra-index-url https://pypi.anaconda.org/ARM-software/simple \
+  --cache-dir=/tmp/pip-cache \
+  --target=/dependencies \
+  numpy
+
+# Now install remaining requirements (scikit-image needs numpy headers)
 RUN --mount=type=cache,id=pip,sharing=locked,target=/tmp/pip-cache \
   pip install \
   --prefer-binary \