diff --git a/.devcontainer/codespaces-dev/devcontainer.json b/.devcontainer/codespaces-dev/devcontainer.json
index 953ce2675..b739415e6 100644
--- a/.devcontainer/codespaces-dev/devcontainer.json
+++ b/.devcontainer/codespaces-dev/devcontainer.json
@@ -5,7 +5,7 @@
 //
 {
     "name": "nextflow-training (codespaces-dev)",
-    "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
+    "image": "mcr.microsoft.com/devcontainers/base:ubuntu-22.04",
 
     "features": {
         "../local-features/init": {},
@@ -29,7 +29,7 @@
         // Nextflow installation version
         "NXF_HOME": "/workspaces/.nextflow",
         "NXF_EDGE": "0",
-        "NXF_VER": "24.10.4",
+        "NXF_VER": "25.04.3",
         // Other env vars
         "HOST_PROJECT_PATH": "/workspaces/training",
         "SHELL": "/bin/bash" // Ush bash
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 2a8ed875f..be1121096 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -12,7 +12,7 @@
         // Nextflow installation version
         "NXF_HOME": "/workspaces/.nextflow",
         "NXF_EDGE": "0",
-        "NXF_VER": "24.10.4",
+        "NXF_VER": "25.04.3",
         // Other env vars
         "HOST_PROJECT_PATH": "/workspaces/training",
         "SHELL": "/bin/bash" // Ush bash
diff --git a/.devcontainer/local-dev/devcontainer.json b/.devcontainer/local-dev/devcontainer.json
index 85c893e58..3ab026df4 100644
--- a/.devcontainer/local-dev/devcontainer.json
+++ b/.devcontainer/local-dev/devcontainer.json
@@ -5,7 +5,7 @@
 //
 {
     "name": "nextflow-training (local-dev)",
-    "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
+    "image": "mcr.microsoft.com/devcontainers/base:ubuntu-22.04",
 
     "features": {
         "../local-features/init": {},
@@ -30,7 +30,7 @@
         // Nextflow installation version
         "NXF_HOME": "/workspaces/training/.nextflow",
         "NXF_EDGE": "0",
-        "NXF_VER": "24.10.4",
+        "NXF_VER": "25.04.3",
         // Other env vars
         "HOST_PROJECT_PATH": "/workspaces/training",
         "SHELL": "/bin/bash" // Ush bash
diff --git a/.github/workflows/docker-devcontainer.yml b/.github/workflows/docker-devcontainer.yml
index 092658e44..d7c47b5df 100644
--- a/.github/workflows/docker-devcontainer.yml
+++ b/.github/workflows/docker-devcontainer.yml
@@ -20,7 +20,7 @@ on:
 
 jobs:
   build_push:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: read
       packages: write