chore(action): add action to publish previous release as latest

Signed-off-by: Pranav C <pranavxc@gmail.com>

.github/workflows/release-previous-docker.yml

@@ -0,0 +1,26 @@
+name: "Release: Previous Docker"
+
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Previous Docker image tag"
+        required: true
+
+jobs:
+  login:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Docker retag and push
+        run: |
+          docker pull nocodb/nocodb:${{ github.event.inputs.tag }}
+          docker image tag nocodb/nocodb:${{ github.event.inputs.tag }} nocodb/nocodb:latest
+          docker push nocodb/nocodb:latest