Main 브랜치에 푸쉬시 jar 파일 생성 workflow 추가

.github/workflows/build.yml

@@ -0,0 +1,42 @@
+name: Build and Upload JAR
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          persist-credentials: false
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: "17"
+          distribution: "temurin"
+
+      - name: Create result directory
+        run: mkdir -p result
+
+      - name: Compile Java files
+        run: |
+          mkdir -p build
+          javac -d build src/*.java
+
+      - name: Create JAR file
+        run: |
+          cd build
+          jar cvfe ../result/stock-trading.jar Main *.class
+          cd ..
+
+      - name: Push JAR file
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.MY_GITHUB_TOKEN }}
+          branch: ${{ github.ref }}

.gitignore

@@ -1,3 +1,6 @@
 .idea/
 out/
-bin/
+bin/
+/build/
+*.class
+!result/*.jar