Make compatible with pnpm (#854)

Switches behavior based on the presence of `yarn.lock`

See https://github.com/discourse/discourse/pull/28671

image/base/release.Dockerfile

@@ -10,7 +10,6 @@ RUN cd /var/www/discourse &&\
     sudo -u discourse bundle config --local path ./vendor/bundle &&\
     sudo -u discourse bundle config --local without test development &&\
     sudo -u discourse bundle install --jobs $(($(nproc) - 1)) &&\
-    sudo -u discourse yarn install --frozen-lockfile &&\
-    sudo -u discourse yarn cache clean &&\
+    sudo -u discourse /bin/bash -c 'if [ -f yarn.lock ]; then yarn install --frozen-lockfile && yarn cache clean; else pnpm install --frozen-lockfile; fi' &&\
     find /var/www/discourse/vendor/bundle -name cache -not -path '*/gems/*' -type d -exec rm -rf {} + &&\
     find /var/www/discourse/vendor/bundle -name tmp -type d -exec rm -rf {} +

image/discourse_dev/Dockerfile

@@ -73,6 +73,6 @@ RUN --mount=type=bind,src=/repo,from=repo-fetcher,target=/tmp/discourse-clone,re
 # Warm global yarn cache
 RUN --mount=type=bind,src=/repo,from=repo-fetcher,target=/tmp/discourse-clone,readwrite \
     cd /tmp/discourse-clone \
-    && yarn install
+    && (if [ -f yarn.lock ]; then yarn install; else pnpm install; fi)
 
 USER root

image/discourse_test/Dockerfile

@@ -30,8 +30,7 @@ FROM with_browsers AS release
 
 RUN cd /var/www/discourse &&\
     sudo -u discourse bundle install --jobs $(($(nproc) - 1)) &&\
-    sudo -E -u discourse -H yarn install &&\
-    sudo -u discourse yarn cache clean
+    sudo -E -u discourse -H /bin/bash -c 'if [ -f yarn.lock ]; then (yarn install && yarn cache clean); else pnpm install; fi'
 
 RUN cd /var/www/discourse && sudo -E -u discourse -H bundle exec rake plugin:install_all_official &&\
     LOAD_PLUGINS=1 sudo -E -u discourse -H bundle exec rake plugin:install_all_gems &&\

launcher_go/v2/test/templates/web.template.yml

@@ -184,7 +184,12 @@ run:
           if [ "$version" != "tests-passed" ]; then
             rm -rf app/assets/javascripts/node_modules
           fi
-        - su discourse -c 'yarn install --frozen-lockfile && yarn cache clean'
+        - |-
+          if [ -f yarn.lock ]; then
+            su discourse -c 'yarn install --frozen-lockfile && yarn cache clean'
+          else
+            su discourse -c 'pnpm install --frozen-lockfile'
+          fi
 
   - exec:
       cd: $home

templates/web.template.yml

@@ -185,8 +185,12 @@ run:
           if [ "$version" != "tests-passed" ]; then
             rm -rf app/assets/javascripts/node_modules
           fi
-        - su discourse -c 'yarn config set network-timeout 60000 -g'
-        - su discourse -c 'yarn install --frozen-lockfile && yarn cache clean'
+        - |-
+          if [ -f yarn.lock ]; then
+            su discourse -c 'yarn install --frozen-lockfile && yarn cache clean'
+          else
+            su discourse -c 'pnpm install --frozen-lockfile'
+          fi
 
   - exec:
       cd: $home