refactor: move run command to it's own plugin

tests/unit/core_2.bats

@@ -20,26 +20,6 @@ teardown() {
   assert_output_contains "Cleans up exited/dead Docker containers and removes dangling image"
 }
 
-@test "(core) run (with --options)" {
-  deploy_app
-  run /bin/bash -c "dokku --force --quiet run $TEST_APP python -V"
-  echo "output: $output"
-  echo "status: $status"
-  assert_success
-}
-
-@test "(core) run (with --env / -e)" {
-  deploy_app
-  run /bin/bash -c "dokku run --env TEST=testvalue -e TEST2=testvalue2 $TEST_APP env | grep -E '^TEST=testvalue'"
-  echo "output: $output"
-  echo "status: $status"
-
-  run /bin/bash -c "dokku run --env TEST=testvalue -e TEST2=testvalue2 $TEST_APP env | grep -E '^TEST2=testvalue2'"
-  echo "output: $output"
-  echo "status: $status"
-  assert_success
-}
-
 @test "(core) unknown command" {
   run /bin/bash -c "dokku fakecommand"
   echo "output: $output"

tests/unit/run_1.bats

@@ -0,0 +1,41 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  global_setup
+  create_app
+}
+
+teardown() {
+  destroy_app
+  dokku config:unset --global DOKKU_RM_CONTAINER
+  global_teardown
+}
+
+@test "(run) run:help" {
+  run /bin/bash -c "dokku run:help"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Run a one-off process inside a container"
+}
+
+@test "(run) run (with --options)" {
+  deploy_app
+  run /bin/bash -c "dokku --force --quiet run $TEST_APP python -V"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+}
+
+@test "(run) run (with --env / -e)" {
+  deploy_app
+  run /bin/bash -c "dokku run --env TEST=testvalue -e TEST2=testvalue2 $TEST_APP env | grep -E '^TEST=testvalue'"
+  echo "output: $output"
+  echo "status: $status"
+
+  run /bin/bash -c "dokku run --env TEST=testvalue -e TEST2=testvalue2 $TEST_APP env | grep -E '^TEST2=testvalue2'"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+}

tests/unit/run_2.bats

@@ -5,14 +5,11 @@ load test_helper
 setup() {
   global_setup
   create_app
-  DOCKERFILE="$BATS_TMPDIR/Dockerfile"
 }
 
 teardown() {
-  rm -rf /home/dokku/$TEST_APP/tls
   destroy_app
   dokku config:unset --global DOKKU_RM_CONTAINER
-  rm -f "$DOCKERFILE"
   global_teardown
 }