Try fix proxy issue?

snap/snapcraft.yaml

@@ -147,6 +147,12 @@ parts:
         - libatomic1
     override-stage: |
       npm install --global yarn
+      if [ -n "${http_proxy-}" ]; then
+        # yarn config set httpProxy "${http_proxy}"
+        # yarn config set httpsProxy "${http_proxy}"
+        export GLOBAL_AGENT_HTTP_PROXY="${http_proxy}"
+        export GLOBAL_AGENT_HTTPS_PROXY="${http_proxy}"
+      fi
       yarn set version berry
       snapcraftctl stage
     organize: