diff --git a/.github/jobs/Dockerfile.truth b/.github/jobs/Dockerfile.truth
new file mode 100644
index 0000000000..6366360e13
--- /dev/null
+++ b/.github/jobs/Dockerfile.truth
@@ -0,0 +1,17 @@
+FROM centos:7
+MAINTAINER George McCabe <mccabe@ucar.edu>
+
+ENV OUTPUT_DIR /data/output
+RUN mkdir -p ${OUTPUT_DIR}
+
+ARG TRUTH_DIR
+
+COPY ${TRUTH_DIR} ${OUTPUT_DIR}/
+
+ARG TRUTH_DIR
+
+# Define the volume mount point
+VOLUME ${OUTPUT_DIR}/${TRUTH_DIR}
+
+USER root
+CMD ["true"]
\ No newline at end of file
diff --git a/.github/jobs/create_docker_truth.sh b/.github/jobs/create_docker_truth.sh
new file mode 100755
index 0000000000..0f69bbfd2e
--- /dev/null
+++ b/.github/jobs/create_docker_truth.sh
@@ -0,0 +1,10 @@
+#! /bin/bash
+
+source ${GITHUB_WORKSPACE}/.github/jobs/bash_functions.sh
+
+image_name=dtcenter/met-data-output:${TRUTH_DATA_VERSION}
+
+time_command docker build -t ${image_name} \
+       --build-arg TRUTH_DIR=met_test_truth \
+       -f ${GITHUB_WORKSPACE}/.github/jobs/Dockerfile.truth \
+       ${RUNNER_WORKSPACE}
diff --git a/.github/workflows/pr_unit_tests.yml b/.github/workflows/pr_unit_tests.yml
index 74cb5e8b84..c67bdb41d5 100644
--- a/.github/workflows/pr_unit_tests.yml
+++ b/.github/workflows/pr_unit_tests.yml
@@ -320,3 +320,26 @@ jobs:
           name: logs
           path: ${{ runner.workspace }}/logs
           if-no-files-found: ignore
+
+  update_truth:
+    name: Update Truth Data
+    runs-on: ubuntu-latest
+    needs: [job_control, unit_tests_1b, unit_tests_2b, unit_tests_3a]
+    if: ${{ needs.job_control.outputs.run_update_truth == 'true' }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Download data from previous jobs
+        uses: actions/download-artifact@v2
+
+      - name: Copy test output into single directory
+        run: |
+          mkdir ${RUNNER_WORKSPACE}/met_test_truth
+          cp -r unit_tests_*/* ${RUNNER_WORKSPACE}/met_test_truth/
+
+      - name: Create Docker Data Volume
+        run: .github/jobs/create_docker_truth.sh
+        env:
+          TRUTH_DATA_VERSION: develop
+          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}