diff --git a/01-intro.html b/01-intro.html
index 7736ffd..95a3495 100644
--- a/01-intro.html
+++ b/01-intro.html
@@ -454,7 +454,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   Too much to install? I just want a quick try…
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If you don’t have access to a Linux terminal or prefer not to install
 tools locally, you can use Google Cloud Shell. You’ll need a Google
diff --git a/02-storage.html b/02-storage.html
index d16302f..bab6554 100644
--- a/02-storage.html
+++ b/02-storage.html
@@ -385,7 +385,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   How to change them?
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -441,7 +441,7 @@ <h3 class="accordion-header" id="headingSpoiler2">
   How to link a project to your billing account?
   </h3>
 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
 <div class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
diff --git a/03-disk-image-manual.html b/03-disk-image-manual.html
index fc515a1..1667115 100644
--- a/03-disk-image-manual.html
+++ b/03-disk-image-manual.html
@@ -452,13 +452,14 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 Creating journal (131072 blocks): done
 Writing superblocks and filesystem accounting information: done</code></pre>
 </section><section><h2 class="section-heading" id="mount-the-disk">Mount the disk<a class="anchor" aria-label="anchor" href="#mount-the-disk"></a></h2>
-<hr class="half-width"><pre><code>kati@vm-work ~ $ sudo mkdir -p /mnt/disks/img
-kati@vm-work ~ $ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
-kati@vm-work ~ $ sudo chmod a+w /mnt/disks/img</code></pre>
+<hr class="half-width"><pre><code>$ sudo mkdir -p /mnt/disks/img
+$ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
+$ sudo chmod a+w /mnt/disks/img</code></pre>
 </section><section><h2 class="section-heading" id="configure-docker-and-pull-the-image">Configure docker and pull the image<a class="anchor" aria-label="anchor" href="#configure-docker-and-pull-the-image"></a></h2>
-<hr class="half-width"><p>Modify the docker config file to store data in the mounted disk</p>
-<pre><code>$ cat /etc/docker/daemon.json
-{
+<hr class="half-width"><p>Add a line <code>"data-root": "/mnt/disks/img"</code> to the docker
+config file <code>/etc/docker/daemon.json</code> so that docker stores
+data in the mounted disk. The file becomes:</p>
+<pre><code>{
         "live-restore": true,
         "log-opts": {
                 "tag": "{{.Name}}"
@@ -467,21 +468,22 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
         "mtu": 1460,
         "data-root": "/mnt/disks/img"
 }</code></pre>
-<p>Remember the comma before the line that you add!</p>
+<p>Remember the comma before the line that you added! I made the
+mistake, you do not have to…</p>
 <p>Restart the docker service</p>
 <pre><code>sudo systemctl restart docker</code></pre>
-<p>Pull the images that you need</p>
+<p>Pull the images that you need. In the example workflow we use three
+of them (in addition to a tiny python image), so we pull:</p>
 <pre><code>docker pull ghcr.io/katilp/pfnano-image-build:main
-
 docker pull cernopendata/cernopendata-client
-
 docker pull rootproject/root:latest</code></pre>
-<pre><code>kati@vm-work ~ $ docker image ls
+<p>After the pull is ready, you can see them with:</p>
+<pre><code>$ docker image ls
 REPOSITORY                          TAG       IMAGE ID       CREATED         SIZE
 rootproject/root                    latest    34eb35079484   4 weeks ago     2.76GB
 cernopendata/cernopendata-client    latest    f690d7308889   7 weeks ago     282MB
 ghcr.io/katilp/pfnano-image-build   main      d95521bc96a9   11 months ago   32.1GB</code></pre>
-<p>Exit from the VM and stop it</p>
+<p>Exit from the VM with <code>exit</code> and stop it</p>
 <pre><code>gcloud compute instances stop vm-work</code></pre>
 </section><section><h2 class="section-heading" id="create-the-image">Create the image<a class="anchor" aria-label="anchor" href="#create-the-image"></a></h2>
 <hr class="half-width"><pre><code>gcloud compute images create pfnano-image-disk --project=hip-new-full-account --source-disk=pfnano-disk --source-disk-zone=europe-west4-c --storage-location=europe-west4</code></pre>
diff --git a/aio.html b/aio.html
index ea3e43d..eee72e9 100644
--- a/aio.html
+++ b/aio.html
@@ -496,7 +496,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   Too much to install? I just want a quick try…
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If you don’t have access to a Linux terminal or prefer not to install
 tools locally, you can use Google Cloud Shell. You’ll need a Google
@@ -614,7 +614,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   How to change them?
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -673,7 +673,7 @@ <h3 class="accordion-header" id="headingSpoiler2">
   How to link a project to your billing account?
   </h3>
 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
 <div class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
@@ -943,15 +943,16 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 </section><section><h2 class="section-heading" id="mount-the-disk">Mount the disk<a class="anchor" aria-label="anchor" href="#mount-the-disk"></a>
 </h2>
 <hr class="half-width">
-<pre><code>kati@vm-work ~ $ sudo mkdir -p /mnt/disks/img
-kati@vm-work ~ $ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
-kati@vm-work ~ $ sudo chmod a+w /mnt/disks/img</code></pre>
+<pre><code>$ sudo mkdir -p /mnt/disks/img
+$ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
+$ sudo chmod a+w /mnt/disks/img</code></pre>
 </section><section><h2 class="section-heading" id="configure-docker-and-pull-the-image">Configure docker and pull the image<a class="anchor" aria-label="anchor" href="#configure-docker-and-pull-the-image"></a>
 </h2>
 <hr class="half-width">
-<p>Modify the docker config file to store data in the mounted disk</p>
-<pre><code>$ cat /etc/docker/daemon.json
-{
+<p>Add a line <code>"data-root": "/mnt/disks/img"</code> to the docker
+config file <code>/etc/docker/daemon.json</code> so that docker stores
+data in the mounted disk. The file becomes:</p>
+<pre><code>{
         "live-restore": true,
         "log-opts": {
                 "tag": "{{.Name}}"
@@ -960,21 +961,22 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
         "mtu": 1460,
         "data-root": "/mnt/disks/img"
 }</code></pre>
-<p>Remember the comma before the line that you add!</p>
+<p>Remember the comma before the line that you added! I made the
+mistake, you do not have to…</p>
 <p>Restart the docker service</p>
 <pre><code>sudo systemctl restart docker</code></pre>
-<p>Pull the images that you need</p>
+<p>Pull the images that you need. In the example workflow we use three
+of them (in addition to a tiny python image), so we pull:</p>
 <pre><code>docker pull ghcr.io/katilp/pfnano-image-build:main
-
 docker pull cernopendata/cernopendata-client
-
 docker pull rootproject/root:latest</code></pre>
-<pre><code>kati@vm-work ~ $ docker image ls
+<p>After the pull is ready, you can see them with:</p>
+<pre><code>$ docker image ls
 REPOSITORY                          TAG       IMAGE ID       CREATED         SIZE
 rootproject/root                    latest    34eb35079484   4 weeks ago     2.76GB
 cernopendata/cernopendata-client    latest    f690d7308889   7 weeks ago     282MB
 ghcr.io/katilp/pfnano-image-build   main      d95521bc96a9   11 months ago   32.1GB</code></pre>
-<p>Exit from the VM and stop it</p>
+<p>Exit from the VM with <code>exit</code> and stop it</p>
 <pre><code>gcloud compute instances stop vm-work</code></pre>
 </section><section><h2 class="section-heading" id="create-the-image">Create the image<a class="anchor" aria-label="anchor" href="#create-the-image"></a>
 </h2>
diff --git a/instructor/01-intro.html b/instructor/01-intro.html
index 729c764..d5a8d06 100644
--- a/instructor/01-intro.html
+++ b/instructor/01-intro.html
@@ -456,7 +456,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   Too much to install? I just want a quick try…
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If you don’t have access to a Linux terminal or prefer not to install
 tools locally, you can use Google Cloud Shell. You’ll need a Google
diff --git a/instructor/02-storage.html b/instructor/02-storage.html
index e97791e..f9cd802 100644
--- a/instructor/02-storage.html
+++ b/instructor/02-storage.html
@@ -387,7 +387,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   How to change them?
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -443,7 +443,7 @@ <h3 class="accordion-header" id="headingSpoiler2">
   How to link a project to your billing account?
   </h3>
 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
 <div class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
diff --git a/instructor/03-disk-image-manual.html b/instructor/03-disk-image-manual.html
index 61ed49e..b8ab901 100644
--- a/instructor/03-disk-image-manual.html
+++ b/instructor/03-disk-image-manual.html
@@ -454,13 +454,14 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 Creating journal (131072 blocks): done
 Writing superblocks and filesystem accounting information: done</code></pre>
 </section><section><h2 class="section-heading" id="mount-the-disk">Mount the disk<a class="anchor" aria-label="anchor" href="#mount-the-disk"></a></h2>
-<hr class="half-width"><pre><code>kati@vm-work ~ $ sudo mkdir -p /mnt/disks/img
-kati@vm-work ~ $ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
-kati@vm-work ~ $ sudo chmod a+w /mnt/disks/img</code></pre>
+<hr class="half-width"><pre><code>$ sudo mkdir -p /mnt/disks/img
+$ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
+$ sudo chmod a+w /mnt/disks/img</code></pre>
 </section><section><h2 class="section-heading" id="configure-docker-and-pull-the-image">Configure docker and pull the image<a class="anchor" aria-label="anchor" href="#configure-docker-and-pull-the-image"></a></h2>
-<hr class="half-width"><p>Modify the docker config file to store data in the mounted disk</p>
-<pre><code>$ cat /etc/docker/daemon.json
-{
+<hr class="half-width"><p>Add a line <code>"data-root": "/mnt/disks/img"</code> to the docker
+config file <code>/etc/docker/daemon.json</code> so that docker stores
+data in the mounted disk. The file becomes:</p>
+<pre><code>{
         "live-restore": true,
         "log-opts": {
                 "tag": "{{.Name}}"
@@ -469,21 +470,22 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
         "mtu": 1460,
         "data-root": "/mnt/disks/img"
 }</code></pre>
-<p>Remember the comma before the line that you add!</p>
+<p>Remember the comma before the line that you added! I made the
+mistake, you do not have to…</p>
 <p>Restart the docker service</p>
 <pre><code>sudo systemctl restart docker</code></pre>
-<p>Pull the images that you need</p>
+<p>Pull the images that you need. In the example workflow we use three
+of them (in addition to a tiny python image), so we pull:</p>
 <pre><code>docker pull ghcr.io/katilp/pfnano-image-build:main
-
 docker pull cernopendata/cernopendata-client
-
 docker pull rootproject/root:latest</code></pre>
-<pre><code>kati@vm-work ~ $ docker image ls
+<p>After the pull is ready, you can see them with:</p>
+<pre><code>$ docker image ls
 REPOSITORY                          TAG       IMAGE ID       CREATED         SIZE
 rootproject/root                    latest    34eb35079484   4 weeks ago     2.76GB
 cernopendata/cernopendata-client    latest    f690d7308889   7 weeks ago     282MB
 ghcr.io/katilp/pfnano-image-build   main      d95521bc96a9   11 months ago   32.1GB</code></pre>
-<p>Exit from the VM and stop it</p>
+<p>Exit from the VM with <code>exit</code> and stop it</p>
 <pre><code>gcloud compute instances stop vm-work</code></pre>
 </section><section><h2 class="section-heading" id="create-the-image">Create the image<a class="anchor" aria-label="anchor" href="#create-the-image"></a></h2>
 <hr class="half-width"><pre><code>gcloud compute images create pfnano-image-disk --project=hip-new-full-account --source-disk=pfnano-disk --source-disk-zone=europe-west4-c --storage-location=europe-west4</code></pre>
diff --git a/instructor/aio.html b/instructor/aio.html
index cf36e60..5468476 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -499,7 +499,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   Too much to install? I just want a quick try…
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If you don’t have access to a Linux terminal or prefer not to install
 tools locally, you can use Google Cloud Shell. You’ll need a Google
@@ -618,7 +618,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   How to change them?
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -677,7 +677,7 @@ <h3 class="accordion-header" id="headingSpoiler2">
   How to link a project to your billing account?
   </h3>
 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
 <div class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
@@ -948,15 +948,16 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 </section><section><h2 class="section-heading" id="mount-the-disk">Mount the disk<a class="anchor" aria-label="anchor" href="#mount-the-disk"></a>
 </h2>
 <hr class="half-width">
-<pre><code>kati@vm-work ~ $ sudo mkdir -p /mnt/disks/img
-kati@vm-work ~ $ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
-kati@vm-work ~ $ sudo chmod a+w /mnt/disks/img</code></pre>
+<pre><code>$ sudo mkdir -p /mnt/disks/img
+$ sudo mount -o discard,defaults /dev/sdb /mnt/disks/img
+$ sudo chmod a+w /mnt/disks/img</code></pre>
 </section><section><h2 class="section-heading" id="configure-docker-and-pull-the-image">Configure docker and pull the image<a class="anchor" aria-label="anchor" href="#configure-docker-and-pull-the-image"></a>
 </h2>
 <hr class="half-width">
-<p>Modify the docker config file to store data in the mounted disk</p>
-<pre><code>$ cat /etc/docker/daemon.json
-{
+<p>Add a line <code>"data-root": "/mnt/disks/img"</code> to the docker
+config file <code>/etc/docker/daemon.json</code> so that docker stores
+data in the mounted disk. The file becomes:</p>
+<pre><code>{
         "live-restore": true,
         "log-opts": {
                 "tag": "{{.Name}}"
@@ -965,21 +966,22 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
         "mtu": 1460,
         "data-root": "/mnt/disks/img"
 }</code></pre>
-<p>Remember the comma before the line that you add!</p>
+<p>Remember the comma before the line that you added! I made the
+mistake, you do not have to…</p>
 <p>Restart the docker service</p>
 <pre><code>sudo systemctl restart docker</code></pre>
-<p>Pull the images that you need</p>
+<p>Pull the images that you need. In the example workflow we use three
+of them (in addition to a tiny python image), so we pull:</p>
 <pre><code>docker pull ghcr.io/katilp/pfnano-image-build:main
-
 docker pull cernopendata/cernopendata-client
-
 docker pull rootproject/root:latest</code></pre>
-<pre><code>kati@vm-work ~ $ docker image ls
+<p>After the pull is ready, you can see them with:</p>
+<pre><code>$ docker image ls
 REPOSITORY                          TAG       IMAGE ID       CREATED         SIZE
 rootproject/root                    latest    34eb35079484   4 weeks ago     2.76GB
 cernopendata/cernopendata-client    latest    f690d7308889   7 weeks ago     282MB
 ghcr.io/katilp/pfnano-image-build   main      d95521bc96a9   11 months ago   32.1GB</code></pre>
-<p>Exit from the VM and stop it</p>
+<p>Exit from the VM with <code>exit</code> and stop it</p>
 <pre><code>gcloud compute instances stop vm-work</code></pre>
 </section><section><h2 class="section-heading" id="create-the-image">Create the image<a class="anchor" aria-label="anchor" href="#create-the-image"></a>
 </h2>
diff --git a/md5sum.txt b/md5sum.txt
index 965a3d4..b6541ff 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -6,7 +6,7 @@
 "links.md" "8184cf4149eafbf03ce8da8ff0778c14" "site/built/links.md" "2024-06-19"
 "episodes/01-intro.md" "ae0534dc9ecd26e0c486ecac9e531fcb" "site/built/01-intro.md" "2024-10-14"
 "episodes/02-storage.md" "7ada170ff81f163e0c458aa1d6964e5b" "site/built/02-storage.md" "2024-10-16"
-"episodes/03-disk-image-manual.md" "b3292e395e63c7046a452a4c89e734d1" "site/built/03-disk-image-manual.md" "2024-10-16"
+"episodes/03-disk-image-manual.md" "392cf66513452997ebc6d2d7b74c313e" "site/built/03-disk-image-manual.md" "2024-10-16"
 "episodes/04-cluster.md" "2ec97ca6c4462252a864b9183737aa31" "site/built/04-cluster.md" "2024-10-16"
 "instructors/instructor-notes.md" "cae72b6712578d74a49fea7513099f8c" "site/built/instructor-notes.md" "2024-06-19"
 "learners/reference.md" "4352462746f1fb54a2fa54541baacd9c" "site/built/reference.md" "2024-10-14"
diff --git a/pkgdown.yml b/pkgdown.yml
index 0afaf79..558338c 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,4 +2,4 @@ pandoc: 3.1.11
 pkgdown: 2.1.1
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-10-16T14:32Z
+last_built: 2024-10-16T17:27Z