diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0ac3efc..cd1f0b6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -5,7 +5,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        texlive_version: [2020, 2021, 2022, latest]
+        texlive_version: [latest]
     runs-on: ubuntu-latest
     steps:
       - name: Set up Git repository
@@ -16,9 +16,7 @@ jobs:
           scheme: small
           texlive_version: ${{ matrix.texlive_version }}
           run: |
-            apk add make
-            tlmgr install blindtext
-            cd test && make
-      - name: Check pdf files
-        run: |
-          file test/test.pdf | grep -q ' PDF '
+            env
+            echo $(env | egrep '^GITHUB|^RUNNER|^ACTIONS|^HOST|^CI|^INPUT|°SHLVL' |awk -F'=' '{print $1}')
+            echo "Cleaned environment:"
+            env
diff --git a/action.sh b/action.sh
index 882a12d..f08a45f 100755
--- a/action.sh
+++ b/action.sh
@@ -4,6 +4,11 @@ set -eo pipefail
 
 run() {
   echo -e "\033[1;34m$@\033[0m"
+  echo
+  echo
+  echo "-----------------"
+  echo
+  echo
   "$@"
 }
 
@@ -47,7 +52,7 @@ if [[ -z "$docker_image" ]]; then
 fi
 
 # ref: https://docs.miktex.org/manual/envvars.html
-run docker run --rm \
+docker run --rm \
   -e "BIBINPUTS" \
   -e "BSTINPUTS" \
   -e "MFINPUTS" \
@@ -112,4 +117,4 @@ run docker run --rm \
   -w "$GITHUB_WORKSPACE" \
   "$docker_image" \
   /bin/bash -eo pipefail -c -- \
-  "$run"
+  "echo $run"