/.github/workflows/ci-bats-unix.yaml: bit of cleanup

.github/workflows/ci-bats-unix.yaml

@@ -102,18 +102,20 @@ jobs:
           tar xvf hadoop-3.3.4.tar.gz
           echo "$(pwd)/hadoop-3.3.4/bin" >> $GITHUB_PATH
       - name: Install parquet-cli
+        id: parquet_cli
         working-directory: ./.ci_bin
         run: |
           git clone https://github.com/apache/parquet-mr.git
           cd parquet-mr/parquet-cli
           mvn clean install -DskipTests
-          ls target
+          runtime_jar="$(pwd)"/target/parquet-cli-1.13.0-SNAPSHOT-runtime.jar
+          echo "::set-output name=runtime_jar::$runtime_jar"
       - name: Check expect
         run: expect -v
       - name: Test all Unix
         env:
           DOLT_FMT: ${{ matrix.dolt_fmt }}
-          PARQUET_RUNTIME_JAR: "/home/runner/work/dolt/dolt/.ci_bin/parquet-mr/parquet-cli/target/parquet-cli-1.13.0-SNAPSHOT-runtime.jar"
+          PARQUET_RUNTIME_JAR: ${{ steps.parquet_cli.outputs.runtime_jar }}
         run: |
           if [ -n "$DOLT_FMT" ]; then export DOLT_DEFAULT_BIN_FORMAT="$DOLT_FMT"; fi
           bats --tap .