chore: add arm64 build support to Docker workflow

* Update beta-build.yml

* Update release-build.yml

* docs: update README to include compatibility information

---------

Co-authored-by: Marvin Haschker <123marvin123@users.noreply.github.com>
Co-authored-by: Sam Chau <chaucted@gmail.com>

.github/workflows/beta-build.yml

@@ -14,7 +14,12 @@ jobs:
         steps:
             - name: Checkout code
               uses: actions/checkout@v4
-
+              
+            - name: Set up QEMU
+              uses: docker/setup-qemu-action@v3
+              with:
+                platforms: linux/amd64,linux/arm64/v8
+                
             - name: Set up Node.js
               uses: actions/setup-node@v4
               with:
@@ -46,6 +51,7 @@ jobs:
             - name: Build and push
               uses: docker/build-push-action@v5
               with:
+                  platforms: linux/amd64,linux/arm64/v8
                   context: .
                   push: ${{ github.event_name != 'pull_request' }}
                   tags: santiagosayshey/profilarr:beta