chore: add yarn

Author: yippira

runner/actions-runner.dockerfile

@@ -46,6 +46,11 @@ RUN apt update -y \
     && ln -sf /usr/bin/pip3 /usr/bin/pip \
     && rm -rf /var/lib/apt/lists/*
 
+RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - \
+  && echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list \
+  && apt update -y \
+  && apt install -y --no-install-recommends yarn
+
 # arch command on OS X reports "i386" for Intel CPUs regardless of bitness
 RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
     && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \