Add automatic build workflow

.forgejo/workflows/build.yaml

@@ -0,0 +1,66 @@
+on:
+  push:
+    paths:
+      - 'overrides/*'
+      - 'modrinth.index.json'
+      - '.forgejo/workflows/build.yaml'
+jobs:
+  build-1.21:
+    runs-on: docker
+    container:
+      image: alpine:3.23.3
+    steps:
+      - name: Install dependencies
+        run: apk -U add git nodejs openjdk21 tar zstd
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Clone mod repo
+        run: |
+          mkdir -p deps overrides/mods
+          git clone --single-branch --branch 1.21 "https://patience.nearmisses.xyz/patience/mc_rebalance.git" "deps/mc_rebalance"
+
+      - name: Restore cached files
+        id: cache-files-restore
+        uses: actions/cache/restore@v5
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+            deps/mc_rebalance/.gradle
+            deps/mc_rebalance/build
+          key: Gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            Gradle-
+
+      - name: Execute Gradle build
+        run: |
+          cd "deps/mc_rebalance/"
+          ./gradlew build
+
+      - name: Save cached files
+        if: always() && steps.cache-files-restore.outputs.cache-hit != 'true'
+        uses: actions/cache/save@v5
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+            deps/mc_rebalance/.gradle
+            deps/mc_rebalance/build
+          key: ${{ steps.cache-files-restore.outputs.cache-primary-key }}
+
+      - name: Save mod to pack
+        run: |
+          cp "deps/mc_rebalance/build/libs/mc_rebalance-"[0-9].[0-9].[0-9]".jar" "overrides/mods"
+
+          (cd "overrides/global_packs/mc_rebalance_datapack/assets/minecraft/lang/" && ./gen-langs.sh)
+
+      - name: Upload release
+        uses: https://data.forgejo.org/forgejo/upload-artifact@v4
+        with:
+          name: MC_Rebalance_2.mrpack
+          path: |
+            overrides
+            modrinth.index.json
+            !**/*.sh

overrides/global_packs/mc_rebalance_datapack/assets/minecraft/lang/gen-langs.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Simply copies en_us.json to other standard english variants