diff --git a/plugins/builder-nixpacks/builder-build b/plugins/builder-nixpacks/builder-build
index df8662b55..8509c2a29 100755
--- a/plugins/builder-nixpacks/builder-build
+++ b/plugins/builder-nixpacks/builder-build
@@ -6,7 +6,6 @@ set -eo pipefail
 [[ $DOKKU_TRACE ]] && set -x
 
 trigger-builder-nixpacks-builder-build() {
-  set -x
   declare desc="builder-nixpacks builder-build plugin trigger"
   declare trigger="builder-build"
   declare BUILDER_TYPE="$1" APP="$2" SOURCECODE_WORK_DIR="$3"
@@ -257,7 +256,6 @@ trigger-builder-nixpacks-builder-build() {
 
   plugn trigger post-build "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR"
   popd &>/dev/null || pushd "/tmp" >/dev/null
-  set +x
 }
 
 trigger-builder-nixpacks-builder-build "$@"
diff --git a/tests/apps/python/Procfile b/tests/apps/python/Procfile
index 77b9a38ff..8a57141ee 100644
--- a/tests/apps/python/Procfile
+++ b/tests/apps/python/Procfile
@@ -8,6 +8,7 @@ web: python3 -u web.py first.Procfile # testing inline comment
 worker: python3 -u worker.py
 custom: echo -n
 release: python3 -u release.py
+task: python3 -u task.py test
 
 
 # Old version with separate processes (use this if you have issues with the threaded version)
diff --git a/tests/unit/builder-dockerfile.bats b/tests/unit/builder-dockerfile.bats
index 754a09be1..73c5b9c99 100644
--- a/tests/unit/builder-dockerfile.bats
+++ b/tests/unit/builder-dockerfile.bats
@@ -147,15 +147,22 @@ EOF
   echo "status: $status"
   assert_success
 
-  run deploy_app dockerfile
+  run deploy_app python dokku@$DOKKU_DOMAIN:$TEST_APP convert_to_dockerfile
   echo "output: $output"
   echo "status: $status"
   assert_success
 
-  run /bin/bash -c "dokku ps:inspect $TEST_APP"
+  run /bin/bash -c "dokku run $TEST_APP python3 task.py test"
   echo "output: $output"
   echo "status: $status"
   assert_success
+  assert_output "['task.py', 'test']"
+
+  run /bin/bash -c "dokku --quiet run $TEST_APP task"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output "['task.py', 'test']"
 
   run /bin/bash -c "dokku run $TEST_APP env"
   echo "output: $output"
diff --git a/tests/unit/builder-herokuish.bats b/tests/unit/builder-herokuish.bats
index 8677d52e5..fb1536f91 100644
--- a/tests/unit/builder-herokuish.bats
+++ b/tests/unit/builder-herokuish.bats
@@ -105,10 +105,17 @@ teardown() {
   echo "status: $status"
   assert_success
 
-  run /bin/bash -c "dokku ps:inspect $TEST_APP"
+  run /bin/bash -c "dokku run $TEST_APP python3 task.py test"
   echo "output: $output"
   echo "status: $status"
   assert_success
+  assert_output "['task.py', 'test']"
+
+  run /bin/bash -c "dokku --quiet run $TEST_APP task"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output "['task.py', 'test']"
 
   run /bin/bash -c "dokku run $TEST_APP env"
   echo "output: $output"
diff --git a/tests/unit/builder-nixpacks.bats b/tests/unit/builder-nixpacks.bats
index 98a9734b5..e66a6147a 100644
--- a/tests/unit/builder-nixpacks.bats
+++ b/tests/unit/builder-nixpacks.bats
@@ -29,7 +29,7 @@ teardown() {
   echo "output: $output"
   echo "status: $status"
   assert_success
-  assert_output_contains 'load build definition from Dockerfile'
+  assert_output_contains 'load build definition from Dockerfile' -1
   assert_output_contains "SECRET_KEY: fjdkslafjdk"
 
   run /bin/bash -c "dokku builder-nixpacks:set $TEST_APP nixpackstoml-path nonexistent.toml"
@@ -41,7 +41,7 @@ teardown() {
   echo "output: $output"
   echo "status: $status"
   assert_success
-  assert_output_contains 'load build definition from Dockerfile'
+  assert_output_contains 'load build definition from Dockerfile' -1
 }
 
 @test "(builder-nixpacks) run" {
@@ -59,11 +59,20 @@ teardown() {
   echo "output: $output"
   echo "status: $status"
   assert_success
+  assert_output_contains 'load build definition from Dockerfile' -1
+  assert_output_contains "SECRET_KEY: fjdkslafjdk"
 
-  run /bin/bash -c "dokku ps:inspect $TEST_APP"
+  run /bin/bash -c "dokku run $TEST_APP python3 task.py test"
   echo "output: $output"
   echo "status: $status"
   assert_success
+  assert_output "['task.py', 'test']"
+
+  run /bin/bash -c "dokku --quiet run $TEST_APP task"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output "['task.py', 'test']"
 
   run /bin/bash -c "dokku run $TEST_APP env"
   echo "output: $output"
diff --git a/tests/unit/builder-pack.bats b/tests/unit/builder-pack.bats
index 3ad4eaf1a..55c662149 100644
--- a/tests/unit/builder-pack.bats
+++ b/tests/unit/builder-pack.bats
@@ -95,16 +95,17 @@ teardown() {
   assert_output_contains 'Building with buildpack 1' 0
   assert_output_contains 'Installing dependencies using pip'
 
-  run /bin/bash -c "dokku run $TEST_APP python task.py test"
+  run /bin/bash -c "dokku run $TEST_APP python3 task.py test"
   echo "output: $output"
   echo "status: $status"
   assert_success
   assert_output "['task.py', 'test']"
 
-  run /bin/bash -c "dokku ps:inspect $TEST_APP"
+  run /bin/bash -c "dokku --quiet run $TEST_APP task"
   echo "output: $output"
   echo "status: $status"
   assert_success
+  assert_output "['task.py', 'test']"
 
   run /bin/bash -c "dokku run $TEST_APP env"
   echo "output: $output"
diff --git a/tests/unit/builder-railpack.bats b/tests/unit/builder-railpack.bats
index e0dcc5f6c..a904e553b 100644
--- a/tests/unit/builder-railpack.bats
+++ b/tests/unit/builder-railpack.bats
@@ -5,7 +5,6 @@ load test_helper
 setup_file() {
   global_setup
   install_railpack
-  docker run --rm --privileged -d --name buildkit moby/buildkit:latest
   touch /etc/default/dokku
   sudo tee -a /etc/default/dokku <<<"export BUILDKIT_HOST='docker-container://buildkit'"
 }
@@ -16,7 +15,9 @@ teardown_file() {
 }
 
 setup() {
+  global_setup
   create_app
+  docker run --rm --privileged -d --name buildkit moby/buildkit:latest
 }
 
 teardown() {
@@ -54,6 +55,43 @@ teardown() {
   assert_output_contains 'Successfully built image in'
 }
 
+@test "(builder-pack) run" {
+  run /bin/bash -c "dokku config:set $TEST_APP SECRET_KEY=fjdkslafjdk"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "dokku builder:set $TEST_APP selected railpack"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run deploy_app python dokku@$DOKKU_DOMAIN:$TEST_APP inject_requirements_txt
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains 'create mise config'
+  assert_output_contains 'Successfully built image in'
+
+  run /bin/bash -c "dokku run $TEST_APP python3 task.py test"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output "['task.py', 'test']"
+
+  run /bin/bash -c "dokku --quiet run $TEST_APP task"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output "['task.py', 'test']"
+
+  run /bin/bash -c "dokku run $TEST_APP env"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains "SECRET_KEY=fjdkslafjdk"
+}
+
 inject_requirements_txt() {
   local APP="$1"
   local APP_REPO_DIR="$2"
diff --git a/tests/unit/ps-general-2.bats b/tests/unit/ps-general-2.bats
index 379d7727d..db2520b3b 100644
--- a/tests/unit/ps-general-2.bats
+++ b/tests/unit/ps-general-2.bats
@@ -169,7 +169,7 @@ teardown() {
   run /bin/bash -c "dokku --quiet ps:scale $TEST_APP"
   output=$(echo "$output" | tr -s " ")
   echo "output: ($output)"
-  assert_output $'cron: 0\ncustom: 0\nrelease: 0\nweb: 1\nworker: 1'
+  assert_output $'cron: 0\ncustom: 0\nrelease: 0\ntask: 0\nweb: 1\nworker: 1'
 
   run /bin/bash -c "dokku ps:scale $TEST_APP worker=0"
   echo "output: $output"
@@ -179,7 +179,7 @@ teardown() {
   run /bin/bash -c "dokku --quiet ps:scale $TEST_APP"
   output=$(echo "$output" | tr -s " ")
   echo "output: ($output)"
-  assert_output $'cron: 0\ncustom: 0\nrelease: 0\nweb: 1\nworker: 0'
+  assert_output $'cron: 0\ncustom: 0\nrelease: 0\ntask: 0\nweb: 1\nworker: 0'
 
   run /bin/bash -c "dokku ps:set $TEST_APP procfile-path second.Procfile"
   echo "output: $output"
diff --git a/tests/unit/test_helper.bash b/tests/unit/test_helper.bash
index 1669d5c29..95e89376d 100644
--- a/tests/unit/test_helper.bash
+++ b/tests/unit/test_helper.bash
@@ -148,6 +148,14 @@ assert_output_contains() {
     input="${input/$expected/}"
     found=$((found + 1))
   done
+
+  if [[ "$count" -eq -1 ]]; then
+    if [[ "$found" -gt 0 ]]; then
+      return 0
+    fi
+    flunk "expected at least 1 occurrence of '$expected', found $found"
+  fi
+
   [[ "$count" -eq "$found" ]] || flunk "expected $count occurrences of '$expected', found $found"
 }