alpine build issue

Author: TravisEz13

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

@@ -4,7 +4,15 @@ ARG BaseImage=mcr.microsoft.com/powershell:alpine-3.8
 
 FROM node:10.15.3-alpine as node
 
-# Do nothing, just added to borrow the already built node files.
+ENV NODE_VERSION 10.15.3 \
+    YARN_VERSION=1.17.3 \
+    NVM_DIR="/root/.nvm" \
+    POWERSHELL_DISTRIBUTION_CHANNEL=PSDocker-TestDeps-Alpine-3.8
+
+# Diagnostics in case copy fails
+RUN ls -l /opt/ \
+    && echo "expcted path:" \
+    && echo "/opt/yarn-v${YARN_VERSION}"
 
 FROM ${BaseImage}
 
@@ -16,11 +24,6 @@ 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

@@ -4,7 +4,15 @@ ARG BaseImage=mcr.microsoft.com/powershell:alpine-3.9
 
 FROM node:10.15.3-alpine as node
 
-# Do nothing, just added to borrow the already built node files.
+ENV NODE_VERSION 10.15.3 \
+    YARN_VERSION=1.17.3 \
+    NVM_DIR="/root/.nvm" \
+    POWERSHELL_DISTRIBUTION_CHANNEL=PSDocker-TestDeps-Alpine-3.8
+
+# Diagnostics in case copy fails
+RUN ls -l /opt/ \
+    && echo "expcted path:" \
+    && echo "/opt/yarn-v${YARN_VERSION}"
 
 FROM ${BaseImage}
 
@@ -18,11 +26,6 @@ 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}