[ci] add build workflow

.forgejo/workflows/build.yml

@@ -0,0 +1,45 @@
+on: [push]
+jobs:
+  upload-one:
+    container:
+      image: docker.io/southfox09/cl-builder:latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Restore npm dependencies
+        uses: actions/cache/restore@v4
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-nodejs-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Restore lein project dependencies
+        uses: actions/cache/restore@v4
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-clojure-${{ hashFiles('**/project.clj') }}
+
+      - run: npm install
+      - run: npm run postcss:release
+      - run: npm run shadow:release
+      - run: mkdir resources/public && cp -rf public/* resources/public
+      - run: lein uberjar
+
+      - name: Cache npm dependencies
+        id: cache-primes-save
+        uses: actions/cache/save@v4
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-nodejs-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Cache lein project dependencies
+        uses: actions/cache/save@v4
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-clojure-${{ hashFiles('**/project.clj') }}
+
+      - name: Upload build
+        uses: actions/upload-artifact@v3
+        with:
+          name: uberjar
+          path: target/*-standalone.jar