fix container image name checks

Author: jpnurmi

.github/actions/environment/action.yml

@@ -14,7 +14,7 @@ runs:
     # Android SDK Tools are arm64-incompatible
     # Android SDK Build Tools are musl-incompatible
     - name: Set Environment Variables for Alpine Linux
-      if: ${{ (runner.os == 'Linux' && runner.arch == 'ARM64') || contains(matrix.container, 'alpine') }}
+      if: ${{ (runner.os == 'Linux' && runner.arch == 'ARM64') || contains(matrix.container.image, 'alpine') }}
       shell: bash
       run: echo "NO_MOBILE=true" >> $GITHUB_ENV
 

.github/workflows/build.yml

@@ -11,9 +11,9 @@ on:
 
 jobs:
   build-sentry-native:
-    name: sentry-native (${{ matrix.container || matrix.os }})
+    name: sentry-native (${{ matrix.container.image || matrix.os }})
     runs-on: ${{ matrix.os }}
-    container: ${{ matrix.container }}
+    container: ${{ matrix.container.image }}
     strategy:
       fail-fast: false
       matrix:
@@ -23,7 +23,8 @@ jobs:
             target: Linux-arm64
           - os: ubuntu-latest
             target: Linux-musl
-            container: ghcr.io/getsentry/sentry-dotnet-alpine:3.21
+            container:
+              image: ghcr.io/getsentry/sentry-dotnet-alpine:3.21
           - os: macos-15 # Pin macos to get the version of Xcode that we need: https://github.com/actions/runner-images/issues/10703
           - os: windows-latest
           - os: windows-11-arm