diff --git a/10_network_and_ssh.Rmd b/10_network_and_ssh.Rmd
index ed0f994306861be2b969cb921fc1fff96aadd398..66d21fd3ccf1e03e15eaefe930970446892471c5 100644
--- a/10_network_and_ssh.Rmd
+++ b/10_network_and_ssh.Rmd
@@ -3,7 +3,7 @@ title: Text manipulation
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/11_install_system_programs.Rmd b/11_install_system_programs.Rmd
index 5d7c255a638f7cdeba557fa8f253ec34ce425e93..5358b59974d1d4b315c3f1c0554bf23c1e83acf4 100644
--- a/11_install_system_programs.Rmd
+++ b/11_install_system_programs.Rmd
@@ -3,7 +3,7 @@ title: Text manipulation
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/12_virtualization.Rmd b/12_virtualization.Rmd
index aadfb4f42776519babc5e82aa934264009f3bf83..b12731364d66e1fec2d314719f949b120ad8b1ae 100644
--- a/12_virtualization.Rmd
+++ b/12_virtualization.Rmd
@@ -3,7 +3,7 @@ title: Text manipulation
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/1_understanding_a_computer.Rmd b/1_understanding_a_computer.Rmd
index 9de76d5dbf0b432f3f5c7594e1716828d9a16bc1..69f93717d72007041693ad7364b46b8c90958526 100644
--- a/1_understanding_a_computer.Rmd
+++ b/1_understanding_a_computer.Rmd
@@ -3,7 +3,7 @@ title: Understanding a computer
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/2_using_the_ifb_cloud.Rmd b/2_using_the_ifb_cloud.Rmd
index 5127154cc319e118d086c34e69bf53adc0ffe9ec..c77021838a1804ea32945afc77704087dc177258 100644
--- a/2_using_the_ifb_cloud.Rmd
+++ b/2_using_the_ifb_cloud.Rmd
@@ -3,7 +3,7 @@ title: IFB (Institu Français de bio-informatique) Cloud
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/3_first_steps_in_a_terminal.Rmd b/3_first_steps_in_a_terminal.Rmd
index 6dc68b8bba92039d016ecf8740a5ecd4824b5831..ae8859bf1ac442b902e2008cdb0ddedf43270d83 100644
--- a/3_first_steps_in_a_terminal.Rmd
+++ b/3_first_steps_in_a_terminal.Rmd
@@ -3,7 +3,7 @@ title: First step in a terminal
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/4_unix_file_system.Rmd b/4_unix_file_system.Rmd
index 8a1f3b9b2e3140fff9fec0e2ffd09f0c447f6cc4..decc97a25eea671317aed55f818c046fbb238c6e 100644
--- a/4_unix_file_system.Rmd
+++ b/4_unix_file_system.Rmd
@@ -3,7 +3,7 @@ title: GNU/Linux file system
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/5_users_and_rights.Rmd b/5_users_and_rights.Rmd
index f8039f46c634c3f21ffa6060ee71afe69f39ec8c..07df4d2fd045ac7ecbc46e41b7b9075abe32b190 100644
--- a/5_users_and_rights.Rmd
+++ b/5_users_and_rights.Rmd
@@ -3,7 +3,7 @@ title: Users and rights
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/6_unix_processes.Rmd b/6_unix_processes.Rmd
index b9b804baa30f35d0f7312bac4f0d54da4ffd6223..b1d8fe7ef5865f68c23ef2fd66df7662df3177b7 100644
--- a/6_unix_processes.Rmd
+++ b/6_unix_processes.Rmd
@@ -3,7 +3,7 @@ title: Unix Processes
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/7_streams_and_pipes.Rmd b/7_streams_and_pipes.Rmd
index 3f8820ee7b12eb8bd36427feac058230ba1cab2e..9b8716d8f374697dc53ad21905ccb8f89a635bdb 100644
--- a/7_streams_and_pipes.Rmd
+++ b/7_streams_and_pipes.Rmd
@@ -3,7 +3,7 @@ title: Unix Streams and pipes
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/8_text_manipulation.Rmd b/8_text_manipulation.Rmd
index 43755b7b9a08b303974a51cff1245012b6f47243..c762b0814f9f3ae8807e328c2e1dcbbc470d4a7f 100644
--- a/8_text_manipulation.Rmd
+++ b/8_text_manipulation.Rmd
@@ -3,7 +3,7 @@ title: Text manipulation
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
diff --git a/9_batch_processing.Rmd b/9_batch_processing.Rmd
index 3bf69dd454b154390c9a2dde2025c5215037244e..d24df215df8fc631b98621fb1cb7e585b547aade 100644
--- a/9_batch_processing.Rmd
+++ b/9_batch_processing.Rmd
@@ -3,7 +3,7 @@ title: Text manipulation
 author: "Laurent Modolo"
 output:
   rmdformats::downcute:
-    self_contain: false
+    self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true