Fix multi-platform image build and push workflow

images/mod.just

@@ -74,45 +74,38 @@ build project="" tag="" local="false":
         # For podman, build for each platform and create manifest
         IFS=',' read -ra PLATFORM_ARRAY <<< "$platforms"
 
-        # Build for each platform
-        for platform in "${PLATFORM_ARRAY[@]}"; do
-            echo -e "{{BLUE}}Building for platform: $platform{{NORMAL}}"
-            platform_tag="${image_name}-${platform//\//-}"
+        # For multi-platform builds with podman, build locally only for current platform
+        echo -e "{{BLUE}}Multi-platform build detected, building for local platform only{{NORMAL}}"
 
-            $runtime buildx build \
-                --platform "$platform" \
-                -f "$containerfile" \
-                -t "$platform_tag" \
-                --load \
-                "$build_context"
+        # Detect local platform
+        if [ "$(uname -m)" = "x86_64" ]; then
+            local_platform="linux/amd64"
+        elif [ "$(uname -m)" = "arm64" ] || [ "$(uname -m)" = "aarch64" ]; then
+            local_platform="linux/arm64"
+        else
+            local_platform="linux/amd64"
+        fi
 
-            # Push platform-specific image
-            $runtime push "$platform_tag"
-        done
+        echo -e "{{BLUE}}Building for local platform: $local_platform{{NORMAL}}"
 
-        # Create and push manifest
-        echo -e "{{BLUE}}Creating multi-platform manifest{{NORMAL}}"
+        $runtime buildx build \
+            --platform "$local_platform" \
+            -f "$containerfile" \
+            -t "$image_name" \
+            --load \
+            "$build_context"
 
-        # Remove existing manifest if it exists
-        $runtime manifest rm "$image_name" 2>/dev/null || true
-
-        manifest_cmd="$runtime manifest create $image_name"
-        for platform in "${PLATFORM_ARRAY[@]}"; do
-            platform_tag="${image_name}-${platform//\//-}"
-            manifest_cmd="$manifest_cmd $platform_tag"
-        done
-        eval "$manifest_cmd"
-
-        echo -e "{{BLUE}}Pushing multi-platform manifest to registry{{NORMAL}}"
-        $runtime manifest push "$image_name"
+        echo -e "{{GREEN}}✓ Local build completed: $image_name{{NORMAL}}"
+        echo -e "{{YELLOW}}Note: For multi-platform registry deployment, use 'just images push'{{NORMAL}}"
     else
         if [[ "$platforms" == *","* ]]; then
             # Local build requested for multi-platform - use local platform only
-            local_platform="linux/$(uname -m)"
             if [ "$(uname -m)" = "x86_64" ]; then
                 local_platform="linux/amd64"
             elif [ "$(uname -m)" = "arm64" ] || [ "$(uname -m)" = "aarch64" ]; then
                 local_platform="linux/arm64"
+            else
+                local_platform="linux/amd64"
             fi
             echo -e "{{BLUE}}Local-only build (from multi-platform): $local_platform{{NORMAL}}"
             platforms="$local_platform"
@@ -213,23 +206,57 @@ push project="" tag="":
 
         echo -e "{{GREEN}}✓ Successfully pushed both commit and latest tags{{NORMAL}}"
     else
-        # Regular tag push
+        # Regular tag push - build and push multi-platform to registry
         image_name=$(just _get_image_name "$tag")
 
-        # Check if the image exists locally
-        if ! $runtime images "$image_name" >/dev/null 2>&1; then
-            echo "{{BOLD}}{{RED}}Error:{{NORMAL}} Image $image_name not found locally" >&2
-            echo "{{YELLOW}}Build the image first with: just images build{{NORMAL}}" >&2
-            echo "{{YELLOW}}Available images:{{NORMAL}}" >&2
-            image_base=$(just _get_image_name "")
-            $runtime images | grep "$image_base" || echo "No images found for project: $project" >&2
-            exit 1
-        fi
+        echo -e "{{BLUE}}Building and pushing multi-platform image: $image_name{{NORMAL}}"
 
-        echo -e "{{BLUE}}Pushing image: $image_name{{NORMAL}}"
-        $runtime push "$image_name"
+        # Auto-discover containerfile
+        containerfile_info=$(just _discover_containerfile)
+        read -r containerfile project_name build_context <<< "$containerfile_info"
 
-        echo -e "{{GREEN}}✓ Successfully pushed: $image_name{{NORMAL}}"
+        # Detect platforms
+        platforms=$(just _detect_platforms "$containerfile")
+        echo -e "{{BLUE}}Platforms: $platforms{{NORMAL}}"
+
+        # Build for each platform and push to registry
+        IFS=',' read -ra PLATFORM_ARRAY <<< "$platforms"
+
+        for platform in "${PLATFORM_ARRAY[@]}"; do
+            echo -e "{{BLUE}}Building and pushing for platform: $platform{{NORMAL}}"
+            platform_tag="${image_name}-${platform//\//-}"
+
+            $runtime buildx build \
+                --platform "$platform" \
+                -f "$containerfile" \
+                -t "$platform_tag" \
+                "$build_context"
+
+            # Push platform-specific image to registry
+            $runtime push "$platform_tag"
+        done
+
+        # Create and push manifest from registry images
+        echo -e "{{BLUE}}Creating multi-platform manifest{{NORMAL}}"
+        $runtime manifest rm "$image_name" 2>/dev/null || true
+
+        manifest_cmd="$runtime manifest create $image_name"
+        for platform in "${PLATFORM_ARRAY[@]}"; do
+            platform_tag="${image_name}-${platform//\//-}"
+            manifest_cmd="$manifest_cmd $platform_tag"
+        done
+        eval "$manifest_cmd"
+
+        echo -e "{{BLUE}}Pushing multi-platform manifest to registry{{NORMAL}}"
+        $runtime manifest push "$image_name"
+
+        # Clean up local platform-specific tags
+        for platform in "${PLATFORM_ARRAY[@]}"; do
+            platform_tag="${image_name}-${platform//\//-}"
+            $runtime rmi "$platform_tag" 2>/dev/null || true
+        done
+
+        echo -e "{{GREEN}}✓ Successfully pushed multi-platform image: $image_name{{NORMAL}}"
     fi
 
 # Pull project image from registry