Make test.sh build example; also set -e

.github/workflows/ci.yaml

@@ -11,11 +11,6 @@ jobs:
       - uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@main
-      - name: Build example flake
-        id: example
-        run: |
-          cd ./example
-          nix build -L --override-input process-compose-flake ..
       - name: Run test
         id: test
         run: |

test/test.sh

@@ -1,4 +1,11 @@
+set -euxo pipefail
+
 cd "$(dirname "$0")"
+
+# First, build the example.
+(cd ../example && nix build -L --override-input process-compose-flake ..)
+
+# Then run the test.
 rm -f ./data.sqlite
 nix run -L --override-input process-compose-flake .. .
 [[ $(cat result.txt) == "Hello" ]] && echo "Test passed" || (echo "Test failed" && exit 1)