diff --git a/.github/workflows/unittests.yaml b/.github/workflows/unittests.yaml
index 5622a4de6..2a409cbd5 100644
--- a/.github/workflows/unittests.yaml
+++ b/.github/workflows/unittests.yaml
@@ -1,5 +1,5 @@
 name: Run Unit Tests
-on: [pull_request]
+on: [push, pull_request]
 
 jobs:
   ctests:
diff --git a/ci/driver.sh b/ci/driver.sh
new file mode 100755
index 000000000..cbd326960
--- /dev/null
+++ b/ci/driver.sh
@@ -0,0 +1,100 @@
+#!/bin/bash --login
+
+my_dir="$( cd "$( dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd )"
+
+# ==============================================================================
+usage() {
+  set +x
+  echo
+  echo "Usage: $0 -t <target> -h"
+  echo
+  echo "  -t  target/machine script is running on    DEFAULT: $(hostname)"
+  echo "  -h  display this message and quit"
+  echo
+  exit 1
+}
+
+# ==============================================================================
+# First, set up runtime environment
+
+export TARGET="$(hostname)"
+
+while getopts "t:h" opt; do
+  case $opt in
+    t)
+      TARGET=$OPTARG
+      ;;
+    h|\?|:)
+      usage
+      ;;
+  esac
+done
+
+case ${TARGET} in
+  hera | orion)
+    echo "Running Automated Testing on $TARGET"
+    source $MODULESHOME/init/sh
+    source $my_dir/${TARGET}.sh
+    module purge
+    module use $GDAS_MODULE_USE
+    module load GDAS/$TARGET
+    module list
+    ;;
+  *)
+    echo "Unsupported platform. Exiting with error."
+    exit 1
+    ;;
+esac
+
+
+# ==============================================================================
+# pull on the repo and get list of open PRs
+cd $GDAS_CI_ROOT/repo
+CI_LABEL="${GDAS_CI_HOST}-RT"
+gh pr list --label "$CI_LABEL" --state "open" | awk '{print $1;}' > $GDAS_CI_ROOT/open_pr_list
+open_pr_list=$(cat $GDAS_CI_ROOT/open_pr_list)
+
+# ==============================================================================
+# clone, checkout, build, test, etc.
+repo_url="https://github.com/NOAA-EMC/GDASApp.git"
+# loop through all open PRs
+for pr in $open_pr_list; do
+  gh pr edit $pr --remove-label $CI_LABEL --add-label ${CI_LABEL}-Running
+  echo "Processing Pull Request #${pr}"
+  mkdir -p $GDAS_CI_ROOT/PR/$pr
+  cd $GDAS_CI_ROOT/PR/$pr
+
+  # clone copy of repo
+  git clone $repo_url
+  cd GDASApp
+
+  # checkout pull request
+  git pull
+  gh pr checkout $pr
+
+  # get commit hash
+  commit=$(git log --pretty=format:'%h' -n 1)
+  if [ -f "$GDAS_CI_ROOT/PR/$pr/commit" ]; then
+    oldcommit=$(cat $GDAS_CI_ROOT/PR/$pr/commit)
+    if [ $oldcommit == $commit ]; then
+      # do no more for this PR, as the commit has already been tested
+      continue
+    fi
+  fi
+  echo "$commit" > $GDAS_CI_ROOT/PR/$pr/commit
+
+  # run build and testing command
+  $my_dir/run_ci.sh -d $GDAS_CI_ROOT/PR/$pr/GDASApp -o $GDAS_CI_ROOT/PR/$pr/output_${commit}
+  ci_status=$?
+  gh pr comment $pr --body-file $GDAS_CI_ROOT/PR/$pr/output_${commit}
+  if [ $ci_status -eq 0 ]; then
+    gh pr edit $pr --remove-label ${CI_LABEL}-Running --add-label ${CI_LABEL}-Passed
+  else
+    gh pr edit $pr --remove-label ${CI_LABEL}-Running --add-label ${CI_LABEL}-Failed
+  fi
+done
+
+# ==============================================================================
+# scrub working directory for older files
+find $GDAS_CI_ROOT/PR/* -mtime +3 -exec rm -rf {} \;
+
diff --git a/ci/orion.sh b/ci/orion.sh
new file mode 100644
index 000000000..1084046ce
--- /dev/null
+++ b/ci/orion.sh
@@ -0,0 +1,10 @@
+GDAS_CI_ROOT=/work2/noaa/stmp/cmartin/CI/GDASApp
+GDAS_CI_HOST='orion'
+export GDAS_MODULE_USE=$GDAS_CI_ROOT/repo/modulefiles
+export SLURM_ACCOUNT=da-cpu
+export SALLOC_ACCOUNT=$SLURM_ACCOUNT
+export SBATCH_ACCOUNT=$SLURM_ACCOUNT
+export SLURM_QOS=debug
+export SLURM_EXCLUSIVE=user
+export OMP_NUM_THREADS=1
+ulimit -s unlimited
diff --git a/ci/run_ci.sh b/ci/run_ci.sh
new file mode 100755
index 000000000..c3bdbd7f1
--- /dev/null
+++ b/ci/run_ci.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+#set -eu
+
+# ==============================================================================
+usage() {
+  set +x
+  echo
+  echo "Usage: $0 -d <directory> -o <output> -h"
+  echo
+  echo "  -d  Run build and ctest for clone in <directory>"
+  echo "  -o  Path to output message detailing results of CI tests"
+  echo "  -h  display this message and quit"
+  echo
+  exit 1
+}
+
+# ==============================================================================
+while getopts "d:o:h" opt; do
+  case $opt in
+    d)
+      repodir=$OPTARG
+      ;;
+    o)
+      outfile=$OPTARG
+      ;;
+    h|\?|:)
+      usage
+      ;;
+  esac
+done
+
+# ==============================================================================
+# start output file
+echo "Automated Pull Request Testing Results:" > $outfile
+echo "Machine: ${TARGET}" >> $outfile
+echo '```' >> $outfile
+echo "Start: $(date) on $(hostname)" >> $outfile
+echo "---------------------------------------------------" >> $outfile
+# ==============================================================================
+# run build script
+cd $repodir
+module purge
+./build.sh -t $TARGET &>> log.build
+build_status=$?
+if [ $build_status -eq 0 ]; then
+  echo "Build:                                 *SUCCESS*" >> $outfile
+  echo "Build: Completed at $(date)" >> $outfile
+else
+  echo "Build:                                  *FAILED*" >> $outfile
+  echo "Build: Failed at $(date)" >> $outfile
+  echo "Build: see output at $repodir/log.build" >> $outfile
+  echo '```' >> $outfile
+  exit $build_status
+fi
+# ==============================================================================
+# run ctests
+cd $repodir/build
+module use $GDAS_MODULE_USE
+module load GDAS/$TARGET
+echo "---------------------------------------------------" >> $outfile
+ctest -R gdasapp --output-on-failure &>> log.ctest
+ctest_status=$?
+npassed=$(cat log.ctest | grep "tests passed")
+if [ $ctest_status -eq 0 ]; then
+  echo "Tests:                                 *SUCCESS*" >> $outfile
+  echo "Tests: Completed at $(date)" >> $outfile
+  echo "Tests: $npassed" >> $outfile
+else
+  echo "Tests:                                  *Failed*" >> $outfile
+  echo "Tests: Failed at $(date)" >> $outfile
+  echo "Tests: $npassed" >> $outfile
+  echo "Tests: see output at $repodir/build/log.ctest" >> $outfile
+fi
+echo '```' >> $outfile
+exit $ctest_status
diff --git a/modulefiles/GDAS/orion.lua b/modulefiles/GDAS/orion.lua
index c68a1e093..56e9ca73f 100644
--- a/modulefiles/GDAS/orion.lua
+++ b/modulefiles/GDAS/orion.lua
@@ -41,9 +41,9 @@ load("eckit/ecmwf-1.16.0")
 load("fckit/ecmwf-0.9.2")
 load("atlas/ecmwf-0.24.1")
 
-load("hpc")
-load("miniconda3")
-load("gdasapp")
+load("hpc/1.2.0")
+load("miniconda3/4.6.14")
+load("gdasapp/1.0.0")
 
 setenv("CC","mpiicc")
 setenv("FC","mpiifort")
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index b8ff8c906..f006b413b 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -28,14 +28,14 @@ install(FILES ${test_data}
 
 ##### unit tests
 # test for python coding norms
-add_test(NAME GDASApp_check_python_norms
+add_test(NAME test_gdasapp_check_python_norms
          COMMAND pycodestyle -v --config ./.pycodestyle .
          WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
 # test for ush/check_yaml_keys.py
-add_test(NAME GDASApp_check_yaml_keys
+add_test(NAME test_gdasapp_check_yaml_keys
          COMMAND ${Python3_EXECUTABLE} ${PROJECT_SOURCE_DIR}/ush/check_yaml_keys.py ${PROJECT_SOURCE_DIR}/test/testinput/check_yaml_keys_ref.yaml ${PROJECT_SOURCE_DIR}/test/testinput/check_yaml_keys_test.yaml
          WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/test/)
 # test for ush/jediinc2fv3.py
-add_test(NAME GDASApp_jedi_increment_to_fv3
+add_test(NAME test_gdasapp_jedi_increment_to_fv3
          COMMAND ${Python3_EXECUTABLE} ${PROJECT_SOURCE_DIR}/ush/jediinc2fv3.py ${PROJECT_BINARY_DIR}/test/testdata/atminc_compress.nc4 ${PROJECT_BINARY_DIR}/test/testdata/fv_increment.nc 
          WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/test/)