pin autoprefixer version at 9.8.6
This will fix the issues with CI builds failing on hack/check-docs.sh
@@ -40,7 +40,8 @@ FROM node:10.15.3-stretch as runtime_deps
ENV FIREBASE_TOOLS_VERSION 7.13.1
RUN npm install -g firebase-tools@${FIREBASE_TOOLS_VERSION} postcss-cli
WORKDIR /app/docs
-RUN npm install autoprefixer
+ENV AUTOPREFIXER_VERSION 9.8.6
+RUN npm install autoprefixer@${AUTOPREFIXER_VERSION}
COPY --from=download-docsy /docsy ./themes/docsy
COPY --from=download-hugo /hugo /usr/local/bin/
COPY --from=download-kubectl /kubectl /usr/local/bin/
