Add line of contact for upload issues and set reserve disc space as environment variable.

ecosystem.config.cjs

@@ -6,6 +6,8 @@ module.exports = {
     env: {
       LEAN4GAME_GITHUB_USER: "",
       LEAN4GAME_GITHUB_TOKEN: "",
+      RES_DISC_SPACE_PERCENTAGE: 1.0,
+      ISSUE_CONTACT: "",
       NODE_ENV: "production",
       PORT: 8002
     },

relay/import.mjs

@@ -13,6 +13,8 @@ const __dirname = path.dirname(__filename);
 
 const TOKEN = process.env.LEAN4GAME_GITHUB_TOKEN
 const USERNAME = process.env.LEAN4GAME_GITHUB_USER
+const MEM_THRESHOLD = process.env.RES_DISC_SPACE_PERCENTAGE
+const CONTACT = process.env.ISSUE_CONTACT
 const octokit = new Octokit({
   auth: TOKEN
 })
@@ -102,9 +104,11 @@ async function doImport (owner, repo, id) {
     const artifact = artifacts.data.artifacts
       .reduce((acc, cur) => acc.created_at < cur.created_at ? cur : acc)
 
-    await checkAgainstDiscMemory(artifact, 0.95);
+    await checkAgainstDiscMemory(artifact, MEM_THRESHOLD);
+
     if (exceedingMemoryLimit === true) {
-      throw new Error(`Uploading file of size ${Math.round(artifact.size_in_bytes / 1024 / 1024)} (MB) would exceed allocated memory on the server.`);
+      throw new Error(`Uploading file of size ${Math.round(artifact.size_in_bytes / 1024 / 1024)} (MB) would exceed allocated memory on the server.\n
+      Please notify server admins via <a href=${CONTACT}>the LEAN zulip instance</a> to resolve this issue.`);
     }
 
     artifactId = artifact.id