diff --git a/apps/cms/.env.example b/apps/cms/.env.example
index 539bc15..356e823 100644
--- a/apps/cms/.env.example
+++ b/apps/cms/.env.example
@@ -13,5 +13,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/crm/.env.example b/apps/crm/.env.example
index adae648..edad22a 100644
--- a/apps/crm/.env.example
+++ b/apps/crm/.env.example
@@ -15,5 +15,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/data-importer/.env.example b/apps/data-importer/.env.example
index 1ad8ebf..f3ce46c 100644
--- a/apps/data-importer/.env.example
+++ b/apps/data-importer/.env.example
@@ -8,5 +8,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/emails-and-messages/.env.example b/apps/emails-and-messages/.env.example
index 539bc15..356e823 100644
--- a/apps/emails-and-messages/.env.example
+++ b/apps/emails-and-messages/.env.example
@@ -13,5 +13,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/invoices/.env.example b/apps/invoices/.env.example
index bc4f1db..723675c 100644
--- a/apps/invoices/.env.example
+++ b/apps/invoices/.env.example
@@ -14,5 +14,6 @@ ALLOWED_DOMAIN_PATTERN=
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/klaviyo/.env.example b/apps/klaviyo/.env.example
index 808a7a6..d4e2a76 100644
--- a/apps/klaviyo/.env.example
+++ b/apps/klaviyo/.env.example
@@ -14,5 +14,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/monitoring/.env.example b/apps/monitoring/.env.example
index 09c362a..8f23472 100644
--- a/apps/monitoring/.env.example
+++ b/apps/monitoring/.env.example
@@ -4,5 +4,6 @@ MONITORING_APP_API_URL=
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/products-feed/.env.example b/apps/products-feed/.env.example
index 808a7a6..d4e2a76 100644
--- a/apps/products-feed/.env.example
+++ b/apps/products-feed/.env.example
@@ -14,5 +14,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/search/.env.example b/apps/search/.env.example
index 6e86b8c..5c2d304 100644
--- a/apps/search/.env.example
+++ b/apps/search/.env.example
@@ -7,5 +7,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/slack/.env.example b/apps/slack/.env.example
index 07d9c8b..b8ab37f 100644
--- a/apps/slack/.env.example
+++ b/apps/slack/.env.example
@@ -8,5 +8,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file
diff --git a/apps/taxes/.env.example b/apps/taxes/.env.example
index 6e86b8c..5c2d304 100644
--- a/apps/taxes/.env.example
+++ b/apps/taxes/.env.example
@@ -7,5 +7,6 @@ APP_LOG_LEVEL=info
 # APP_IFRAME_BASE_URL = http://localhost:3000, so Dashboard on host can access iframe
 # APP_API_BASE_URL=http://host.docker.internal:3000 - so Saleor can reach App running on host, from the container.
 # If developped with tunnels, set this empty, it will fallback to default Next's localhost:3000
+# https://docs.saleor.io/docs/3.x/developer/extending/apps/local-app-development
 APP_IFRAME_BASE_URL=
 APP_API_BASE_URL=
\ No newline at end of file