gh workflow

.github/workflows/update.yml

@@ -0,0 +1,28 @@
+name: Pull latest data from Mojang API
+
+on:
+  push:
+  workflow_dispatch:
+  schedule:
+    - cron:  '25 */6 * * *'
+
+jobs:
+  scheduled:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out this repo
+      uses: actions/checkout@v2
+    - name: Fetch latest data
+      run: |-
+        node update_blocklist.js
+    - name: Generate todo.txt
+      run: |-
+        comm -23 <(sort -u data/current.txt) <(awk -F= '{print $1}' data/identified.txt |sort -u) | sort -u > data/todo.txt
+    - name: Commit and push if it changed
+      run: |-
+        git config user.name "Automated"
+        git config user.email "actions@users.noreply.github.com"
+        git add -A
+        timestamp=$(date -u)
+        git commit -m "Blocklist updated: ${timestamp}" || exit 0
+        git push