Add a dev workflow for GitHub actions, change the production workflow to only kick off when pushed to master

.github/workflows/dockerize_dev.yml

@@ -0,0 +1,43 @@
+name: dockerize-prod
+
+on:
+  pull_request:
+    paths:
+      - src/khoj/**
+      - config/**
+      - pyproject.toml
+      - prod.Dockerfile
+      - .github/workflows/dockerize_dev.yml
+  workflow_dispatch:
+
+env:
+  DOCKER_IMAGE_TAG: 'dev'
+
+jobs:
+  build:
+    name: Build Production Docker Image, Push to Container Registry
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.PAT }}
+
+      - name: 📦 Build and Push Docker Image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: prod.Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: ghcr.io/${{ github.repository }}:${{ env.DOCKER_IMAGE_TAG }}
+          build-args: |
+            PORT=42110

.github/workflows/dockerize_production.yml

@@ -1,7 +1,6 @@
 name: dockerize-prod
 
 on:
-  pull_request:
   push:
     tags:
       - "*"