Add piwheels as additional URL for downloading pre-built wheels

diff --git a/docker-builders/Dockerfile.pikepdf b/docker-builders/Dockerfile.pikepdf
index 2594f71f521337700e2040d97223e0c2da0e1006..b94173fabe1df3b20f39fd03211adfffe740d16e 100644 (file)
--- a/docker-builders/Dockerfile.pikepdf
+++ b/docker-builders/Dockerfile.pikepdf
@@ -77,6 +77,8 @@ RUN set -eux \
     && python3 -m pip wheel \
       # Build the package at the required version
       pikepdf==${PIKEPDF_VERSION} \
+      # Look to piwheels for additional pre-built wheels
+      --extra-index-url https://www.piwheels.org/simple \
       # Output the *.whl into this directory
       --wheel-dir wheels \
       # Do not use a binary packge for the package being built