chore: add build docker image workflow

.github/workflows/build.yaml

@@ -0,0 +1,60 @@
+name: Build Docker Image
+on:
+  workflow_call:
+    inputs:
+      platform:
+        required: true
+        description: Specify the platform supported
+        type: string
+    secrets:
+      TOKEN:
+        required: true
+
+  workflow_dispatch:
+    inputs:
+      platform:
+        required: true
+        description: Specify the platform supported
+        default: 'linux/amd64'
+        type: choice
+        options:
+          - linux/amd64
+          - linux/arm64
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: 'rag-wtf/text-splitter'
+
+jobs:
+  build:
+    runs-on: ${{ inputs.platform == 'linux/arm64' && 'ubuntu-24.04-arm' || 'ubuntu-latest' }}
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Show Runner
+        run: |
+          echo "Running on runner: $(uname -a)"
+          echo "Platform input: ${{ inputs.platform }}"
+
+      - uses: actions/checkout@v4
+      - name: Login to ghcr.io
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.TOKEN }}
+      - name: Replace slash with dash
+        id: replace_slash
+        run: |
+          platform_value="${{ inputs.platform }}"
+          replaced_value="${platform_value//\//-}"
+          echo "REPLACED_PLATFORM=$replaced_value" >> $GITHUB_ENV
+      - name: Build image and push to registry
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile
+          platforms: ${{ inputs.platform }}
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}-${{ env.REPLACED_PLATFORM }}:latest