alpine build issue

Author: TravisEz13

release/preview/alpine38/test-deps/docker/Dockerfile

@@ -16,6 +16,11 @@ ENV NODE_VERSION 10.15.3 \
 # workaround for Alpine to run in Azure DevOps
 ENV NODE_NO_WARNINGS=1
 
+# Diagnostics in case copy fails
+RUN ls -l /opt/ \
+    && echo "expcted path:" \
+    && echo "/opt/yarn-v${YARN_VERSION}"
+
 # Copy node and yarn into image
 COPY --from=node /usr/local/bin/node /usr/local/bin/node
 COPY --from=node /opt/yarn-v${YARN_VERSION} /opt/yarn-v${YARN_VERSION}

release/preview/alpine39/test-deps/docker/Dockerfile

@@ -18,6 +18,11 @@ ENV NODE_VERSION 10.15.3 \
 # workaround for Alpine to run in Azure DevOps
 ENV NODE_NO_WARNINGS=1
 
+# Diagnostics in case copy fails
+RUN ls -l /opt/ \
+    && echo "expcted path:" \
+    && echo "/opt/yarn-v${YARN_VERSION}"
+
 # Copy node and yarn into image
 COPY --from=node /usr/local/bin/node /usr/local/bin/node
 COPY --from=node /opt/yarn-v${YARN_VERSION} /opt/yarn-v${YARN_VERSION}