diff --git a/.github/workflows/workflow-java.yaml b/.github/workflows/workflow-java.yaml
index e09d4aa..a378241 100644
--- a/.github/workflows/workflow-java.yaml
+++ b/.github/workflows/workflow-java.yaml
@@ -3,7 +3,17 @@ name: Java Workflow
 
 on:
   workflow_call:
+    inputs:
+      mainline_branch:
+        type: string
+        default: format('refs/heads/{0}', github.event.repository.default_branch)
+        describe: "The mainline branch for the repo. Deployments to the staging and production environments are done only on push to this branch. Defaults to the repo's default branch."
   workflow_dispatch:
+    inputs:
+      mainline_branch:
+        type: string
+        default: format('refs/heads/{0}', github.event.repository.default_branch)
+        describe: "The mainline branch for the repo. Deployments to the staging and production environments are done only on push to this branch. Defaults to the repo's default branch."
 
 jobs:
   # Test projects
@@ -31,7 +41,7 @@ jobs:
   # Staging jobs
   build_jib_staging:
     name: "Build docker image via jib with staging tag"
-    if: github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - build_jib
     uses: ./.github/workflows/run_mvn.yaml
@@ -39,7 +49,7 @@ jobs:
       script: package jib:build -Djib.to.tags=staging -Djib.target.namespace=rcsb --no-transfer-progress -Dmaven.test.skip=true
   skaffold_deploy_staging:
     name: "Skaffold deploy into staging namespace"
-    if: github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - build_jib_staging
     uses: ./.github/workflows/deploy_skaffold.yaml
@@ -50,6 +60,7 @@ jobs:
   # TODO: Increment version of project through workflow. Add this step once we are ready to retire older workflow files.
   build_docker_production:
     name: "Build docker image via jib with production tag"
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - skaffold_deploy_staging
     uses: ./.github/workflows/run_mvn.yaml
@@ -57,7 +68,7 @@ jobs:
       script: package jib:build -Djib.to.tags=production -Djib.target.namespace=rcsb --no-transfer-progress -Dmaven.test.skip=true
   skaffold_deploy_production:
     name: Skaffold deploy into production environment"
-    if: github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - build_docker_production
     uses: ./.github/workflows/deploy_skaffold.yaml
diff --git a/.github/workflows/workflow-node.yaml b/.github/workflows/workflow-node.yaml
index f3b559e..87215a8 100644
--- a/.github/workflows/workflow-node.yaml
+++ b/.github/workflows/workflow-node.yaml
@@ -3,7 +3,17 @@ name: Node Workflow
 
 on:
   workflow_call:
+    inputs:
+      mainline_branch:
+        type: string
+        default: format('refs/heads/{0}', github.event.repository.default_branch)
+        describe: "The mainline branch for the repo. Deployments to the staging and production environments are done only on push to this branch. Defaults to the repo's default branch."
   workflow_dispatch:
+    inputs:
+      mainline_branch:
+        type: string
+        default: format('refs/heads/{0}', github.event.repository.default_branch)
+        describe: "The mainline branch for the repo. Deployments to the staging and production environments are done only on push to this branch. Defaults to the repo's default branch."
 
 jobs:
   # Build jobs
@@ -43,6 +53,7 @@ jobs:
   # Staging jobs
   build_docker_staging:
     name: "Build docker image with staging tag"
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - test_npm
       - build_docker
@@ -53,7 +64,7 @@ jobs:
       additional_tag: "staging"
   skaffold_deploy_staging:
     name: "Skaffold deploy into staging namespace"
-    if: github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - build_docker_staging
     uses: ./.github/workflows/deploy_skaffold.yaml
@@ -63,6 +74,7 @@ jobs:
   # Production jobs
   build_docker_production:
     name: "Build docker image with production tag"
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - build_docker_staging
     uses: ./.github/workflow/build_docker.yaml
@@ -72,7 +84,7 @@ jobs:
       additional_tag: "production"
   skaffold_deploy_production:
     name: Skaffold deploy into production environment"
-    if: github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
+    if: (github.ref == inputs.mainline_branch) && (github.event_name != 'pull_request')
     needs:
       - build_docker_production
     uses: ./.github/workflows/deploy_skaffold.yaml
diff --git a/README.md b/README.md
index 5633b4b..d993b91 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,8 @@ jobs:
   run-workflow:
     name: "Run automated workflow"
     uses: rcsb/devops-cicd-github-actions/.github/workflows/workflow-java.yaml@master
+    with:
+      mainline_branch: # The mainline branch for the repo. Deployments to the staging and production environments are done only on push to this branch. Defaults to the repo's default branch.
 ```
 
 # Node Projects
@@ -71,6 +73,8 @@ jobs:
   run-workflow:
     name: "Run automated workflow"
     uses: rcsb/devops-cicd-github-actions/.github/workflows/workflow-node.yaml@master
+    with:
+      mainline_branch: # The mainline branch for the repo. Deployments to the staging and production environments are done only on push to this branch. Defaults to the repo's default branch.
 ```
 
 # Docker Projects