diff --git a/.github/workflows/azure-build.yml b/.github/workflows/azure-build.yml
index 352d2b5..507c0be 100644
--- a/.github/workflows/azure-build.yml
+++ b/.github/workflows/azure-build.yml
@@ -1,6 +1,8 @@
 name: Build and push 'azure image' to Docker
 
 on:
+  repository_dispatch:
+    types: [azure-build]
   push:
     branches:
       - 'master'
@@ -11,7 +13,7 @@ on:
   workflow_dispatch: {}
 
 env:
-  DTC_VERSION: v3.4.2
+  DTC_VERSION: ${{ github.event.client_payload.version || 'v3.4.2' }}
 
 jobs:
   docker:
diff --git a/.github/workflows/jenkins-ssh-agent-build.yml b/.github/workflows/jenkins-ssh-agent-build.yml
index d46f194..20e290c 100644
--- a/.github/workflows/jenkins-ssh-agent-build.yml
+++ b/.github/workflows/jenkins-ssh-agent-build.yml
@@ -1,6 +1,8 @@
 name: Build and push Docker image for 'jenkins-ssh-agent'
 
 on:
+  repository_dispatch:
+    types: [jenkins-ssh-agent-build]
   push:
     branches:
       - 'master'
@@ -11,7 +13,7 @@ on:
   workflow_dispatch: {}
 
 env:
-  DTC_VERSION: v3.4.2
+  DTC_VERSION: ${{ github.event.client_payload.version || 'v3.4.2' }}
 
 jobs:
   docker:
diff --git a/.github/workflows/standard-build.yml b/.github/workflows/standard-build.yml
index 7ea7a25..973b43c 100644
--- a/.github/workflows/standard-build.yml
+++ b/.github/workflows/standard-build.yml
@@ -1,6 +1,8 @@
 name: Build and push 'standard image' to Docker
 
 on:
+  repository_dispatch:
+    types: [standard-build]
   push:
     branches:
       - 'master'
@@ -11,7 +13,7 @@ on:
   workflow_dispatch: {}
 
 env:
-  DTC_VERSION: v3.4.2
+  DTC_VERSION: ${{ github.event.client_payload.version || 'v3.4.2' }}
 
 jobs:
   docker:
diff --git a/.github/workflows/standard-with-pandoc-build.yml b/.github/workflows/standard-with-pandoc-build.yml
index c8bfaf1..3385562 100644
--- a/.github/workflows/standard-with-pandoc-build.yml
+++ b/.github/workflows/standard-with-pandoc-build.yml
@@ -1,6 +1,8 @@
 name: Build and push 'standard pandoc image' to Docker
 
 on:
+  repository_dispatch:
+    types: [standard-with-pandoc-build]
   push:
     branches:
       - 'master'
@@ -11,7 +13,7 @@ on:
   workflow_dispatch: {}
 
 env:
-  DTC_VERSION: v3.4.2
+  DTC_VERSION: ${{ github.event.client_payload.version || 'v3.4.2' }}
 
 jobs:
   docker: