Fix bug in ci workflow: NF install should be conditional

.github/workflows/ci.yml

@@ -33,16 +33,16 @@ jobs:
          #- "-profile klebsiella_pneumoniae"
          #- "-profile escherichia_coli"
     steps:
-      - name: Check out pipeline code
+      - name: Install Nextflow
         # For running (locally) with ACT, we use a docker image with Nextflow pre-installed
         if: "${{ ! github.event.act }}"
-        uses: actions/checkout@v3
-
-      - name: Install Nextflow
         uses: nf-core/setup-nextflow@v1
         with:
           version: "${{ matrix.NXF_VER }}"
 
+      - name: Check out pipeline code
+        uses: actions/checkout@v3
+
       - name: Run pipeline with test data
         run: |
           nextflow run ${GITHUB_WORKSPACE}/main.nf ${{ matrix.parameters }} -config configs/nextflow.ci.config --csv assets/test_data/samplelist.testrun.csv