Added Manual docker build workflow

Author: rohit-dimagi

.github/workflows/docker-build-manual.yaml

@@ -0,0 +1,40 @@
+name: Docker Build Manual
+
+on:
+  push:
+    branches: 
+        - "manual-docker"
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Docker image version tag (e.g. v1.2.3)"
+        required: true
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-qemu-action@v3
+      - uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Build and push image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: |
+            veridise/audithub-client:latest
+            veridise/audithub-client:${{ inputs.version }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max