Try to get Docker images to build for both architectures

Author: uberbrady

.github/workflows/docker-arm.yml

@@ -1,5 +1,5 @@
 # Snipe-IT Docker image build for hub.docker.com
-name: Docker ARM64 images (Ubuntu)
+name: Docker cross-platform images (Ubuntu and Alpine)
 
 # Run this Build for all pushes to 'master' or develop branch, or tagged releases.
 # Also run for PRs to ensure PR doesn't break Docker build process
@@ -19,10 +19,10 @@ permissions:
   contents: read
 
 jobs:
-  docker-ubuntu-arm:
+  docker-ubuntu:
     # Ensure this job never runs on forked repos. It's only executed for 'grokability/snipe-it'
     if: github.repository == 'grokability/snipe-it'
-    runs-on: ubuntu-24.04-arm
+    runs-on: ubuntu-latest
     env:
       # Define tags to use for Docker images based on Git tags/branches (for docker/metadata-action)
       # For a new commit on default branch (master), use the literal tag 'latest' on Docker image.
@@ -77,17 +77,17 @@ jobs:
         with:
           context: .
           file: ./Dockerfile
-          platforms: linux/arm64
+          platforms: linux/arm64,linux/amd64
           # For pull requests, we run the Docker build (to ensure no PR changes break the build),
           # but we ONLY do an image push to DockerHub if it's NOT a PR
           push: ${{ github.event_name != 'pull_request' }}
           # Use tags / labels provided by 'docker/metadata-action' above
           tags: ${{ steps.meta_build.outputs.tags }}
           labels: ${{ steps.meta_build.outputs.labels }}
-  docker-alpine-arm:
+  docker-alpine:
     # Ensure this job never runs on forked repos. It's only executed for 'grokability/snipe-it'
     if: github.repository == 'grokability/snipe-it'
-    runs-on: ubuntu-24.04-arm
+    runs-on: ubuntu-latest
     env:
       # Define tags to use for Docker images based on Git tags/branches (for docker/metadata-action)
       # For a new commit on default branch (master), use the literal tag 'latest' on Docker image.
@@ -142,7 +142,7 @@ jobs:
         with:
           context: .
           file: ./Dockerfile.alpine
-          platforms: linux/arm64
+          platforms: linux/arm64,linux/amd64
           # For pull requests, we run the Docker build (to ensure no PR changes break the build),
           # but we ONLY do an image push to DockerHub if it's NOT a PR
           push: ${{ github.event_name != 'pull_request' }}