diff --git a/02-storage.html b/02-storage.html
index 52c2fa6..dd84860 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" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -433,6 +433,16 @@ <h3 id="billing-account">Billing account?<a class="anchor" aria-label="anchor" h
 <p>If you created the project from the command line without specifying
 the billing account, you must link it to an existing billing
 account.</p>
+<div id="accordionSpoiler2" class="accordion spoiler-accordion accordion-flush">
+<div class="accordion-item">
+<button class="accordion-button spoiler-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSpoiler2" aria-expanded="false" aria-controls="collapseSpoiler2">
+  <h3 class="accordion-header" id="headingSpoiler2">
+  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>
+  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 class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -453,6 +463,10 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <pre class="sourceCode bash" tabindex="0"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" tabindex="-1"></a><span class="ex">gcloud</span> billing projects link <span class="op">&lt;</span>PROJECT_ID<span class="op">&gt;</span> --billing-account <span class="op">&lt;</span>ACCOUNT_ID<span class="op">&gt;</span></span></code></pre>
 </div>
 </div>
+</div>
+</div>
+</div>
+</div>
 <div class="section level3">
 <h3 id="choose-your-region">Choose your region<a class="anchor" aria-label="anchor" href="#choose-your-region"></a></h3>
 <p>In this tutorial, we will use the Google computing centre
@@ -530,8 +544,7 @@ <h3 class="callout-title">Key Points</h3>
 files.</li>
 <li>The storage cost depends on the volume stored and for this type of
 processing is very small.</li>
-<li>The download of the output files for the bucket has a significant
-cost.</li>
+<li>The download of big output files from the bucket can be costly.</li>
 </ul></div>
 </div>
 </div>
diff --git a/03-disk-image.html b/03-disk-image.html
index 6bf28f1..b4240ee 100644
--- a/03-disk-image.html
+++ b/03-disk-image.html
@@ -234,7 +234,7 @@ <h2 class="accordion-header chapters" id="flush-headingEleven">
 
     <div id="flush-collapsecurrent" class="accordion-collapse collapse show" aria-labelledby="flush-headingcurrent" data-bs-parent="#accordionFlushcurrent">
       <div class="accordion-body">
-        <ul><li><a href="#work-in-progress">Work in progress</a></li>
+        <ul><li><a href="#why-a-disk-image">Why a disk image?</a></li>
 <li><a href="#prerequisites">Prerequisites</a></li>
 <li><a href="#get-the-code">Get the code</a></li>
 <li><a href="#create-the-image">Create the image</a></li>
@@ -346,9 +346,13 @@ <h3 class="card-title">Objectives</h3>
 </div>
 </div>
 </div>
-<section><h2 class="section-heading" id="work-in-progress">Work in progress<a class="anchor" aria-label="anchor" href="#work-in-progress"></a></h2>
-<hr class="half-width"><p>Building the disk image does not work for a new GCP account for the
-moment.</p>
+<section><h2 class="section-heading" id="why-a-disk-image">Why a disk image?<a class="anchor" aria-label="anchor" href="#why-a-disk-image"></a></h2>
+<hr class="half-width"><p>The container image for the MiniAOD processing is very big and it
+needs to be pulled to the nodes of the cluster. It can take 30 mins to
+pull it. Making it available to the nodes of the cluster through a
+pre-built secondary disk image speeds up the workflow start.</p>
+<p>A script is available but building the disk image does not work for a
+new GCP account for the moment.</p>
 <p>Investigating….</p>
 </section><section><h2 class="section-heading" id="prerequisites">Prerequisites<a class="anchor" aria-label="anchor" href="#prerequisites"></a></h2>
 <hr class="half-width"><div class="section level3">
diff --git a/aio.html b/aio.html
index 746ace8..5d4a12b 100644
--- a/aio.html
+++ b/aio.html
@@ -614,7 +614,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   How to change them?
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -665,6 +665,16 @@ <h3 id="billing-account">Billing account?<a class="anchor" aria-label="anchor" h
 <p>If you created the project from the command line without specifying
 the billing account, you must link it to an existing billing
 account.</p>
+<div id="accordionSpoiler2" class="accordion spoiler-accordion accordion-flush">
+<div class="accordion-item">
+<button class="accordion-button spoiler-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSpoiler2" aria-expanded="false" aria-controls="collapseSpoiler2">
+  <h3 class="accordion-header" id="headingSpoiler2">
+  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>
+  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 class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -685,6 +695,10 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <pre class="sourceCode bash" tabindex="0"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" tabindex="-1"></a><span class="ex">gcloud</span> billing projects link <span class="op">&lt;</span>PROJECT_ID<span class="op">&gt;</span> --billing-account <span class="op">&lt;</span>ACCOUNT_ID<span class="op">&gt;</span></span></code></pre>
 </div>
 </div>
+</div>
+</div>
+</div>
+</div>
 <div class="section level3">
 <h3 id="choose-your-region">Choose your region<a class="anchor" aria-label="anchor" href="#choose-your-region"></a>
 </h3>
@@ -771,8 +785,7 @@ <h3 class="callout-title">Key Points</h3>
 files.</li>
 <li>The storage cost depends on the volume stored and for this type of
 processing is very small.</li>
-<li>The download of the output files for the bucket has a significant
-cost.</li>
+<li>The download of big output files from the bucket can be costly.</li>
 </ul>
 </div>
 </div>
@@ -816,11 +829,15 @@ <h3 class="card-title">Objectives</h3>
 </div>
 </div>
 </div>
-<section><h2 class="section-heading" id="work-in-progress">Work in progress<a class="anchor" aria-label="anchor" href="#work-in-progress"></a>
+<section><h2 class="section-heading" id="why-a-disk-image">Why a disk image?<a class="anchor" aria-label="anchor" href="#why-a-disk-image"></a>
 </h2>
 <hr class="half-width">
-<p>Building the disk image does not work for a new GCP account for the
-moment.</p>
+<p>The container image for the MiniAOD processing is very big and it
+needs to be pulled to the nodes of the cluster. It can take 30 mins to
+pull it. Making it available to the nodes of the cluster through a
+pre-built secondary disk image speeds up the workflow start.</p>
+<p>A script is available but building the disk image does not work for a
+new GCP account for the moment.</p>
 <p>Investigating….</p>
 </section><section><h2 class="section-heading" id="prerequisites">Prerequisites<a class="anchor" aria-label="anchor" href="#prerequisites"></a>
 </h2>
diff --git a/instructor/02-storage.html b/instructor/02-storage.html
index bf2d9ff..bba916d 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" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -435,6 +435,16 @@ <h3 id="billing-account">Billing account?<a class="anchor" aria-label="anchor" h
 <p>If you created the project from the command line without specifying
 the billing account, you must link it to an existing billing
 account.</p>
+<div id="accordionSpoiler2" class="accordion spoiler-accordion accordion-flush">
+<div class="accordion-item">
+<button class="accordion-button spoiler-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSpoiler2" aria-expanded="false" aria-controls="collapseSpoiler2">
+  <h3 class="accordion-header" id="headingSpoiler2">
+  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>
+  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 class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -455,6 +465,10 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <pre class="sourceCode bash" tabindex="0"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" tabindex="-1"></a><span class="ex">gcloud</span> billing projects link <span class="op">&lt;</span>PROJECT_ID<span class="op">&gt;</span> --billing-account <span class="op">&lt;</span>ACCOUNT_ID<span class="op">&gt;</span></span></code></pre>
 </div>
 </div>
+</div>
+</div>
+</div>
+</div>
 <div class="section level3">
 <h3 id="choose-your-region">Choose your region<a class="anchor" aria-label="anchor" href="#choose-your-region"></a></h3>
 <p>In this tutorial, we will use the Google computing centre
@@ -532,8 +546,7 @@ <h3 class="callout-title">Key Points</h3>
 files.</li>
 <li>The storage cost depends on the volume stored and for this type of
 processing is very small.</li>
-<li>The download of the output files for the bucket has a significant
-cost.</li>
+<li>The download of big output files from the bucket can be costly.</li>
 </ul></div>
 </div>
 </div>
diff --git a/instructor/03-disk-image.html b/instructor/03-disk-image.html
index dd24302..7c5e37a 100644
--- a/instructor/03-disk-image.html
+++ b/instructor/03-disk-image.html
@@ -234,7 +234,7 @@ <h2 class="accordion-header chapters" id="flush-headingEleven">
 
     <div id="flush-collapsecurrent" class="accordion-collapse collapse show" aria-labelledby="flush-headingcurrent" data-bs-parent="#accordionFlushcurrent">
       <div class="accordion-body">
-        <ul><li><a href="#work-in-progress">Work in progress</a></li>
+        <ul><li><a href="#why-a-disk-image">Why a disk image?</a></li>
 <li><a href="#prerequisites">Prerequisites</a></li>
 <li><a href="#get-the-code">Get the code</a></li>
 <li><a href="#create-the-image">Create the image</a></li>
@@ -348,9 +348,13 @@ <h3 class="card-title">Objectives</h3>
 </div>
 </div>
 </div>
-<section><h2 class="section-heading" id="work-in-progress">Work in progress<a class="anchor" aria-label="anchor" href="#work-in-progress"></a></h2>
-<hr class="half-width"><p>Building the disk image does not work for a new GCP account for the
-moment.</p>
+<section><h2 class="section-heading" id="why-a-disk-image">Why a disk image?<a class="anchor" aria-label="anchor" href="#why-a-disk-image"></a></h2>
+<hr class="half-width"><p>The container image for the MiniAOD processing is very big and it
+needs to be pulled to the nodes of the cluster. It can take 30 mins to
+pull it. Making it available to the nodes of the cluster through a
+pre-built secondary disk image speeds up the workflow start.</p>
+<p>A script is available but building the disk image does not work for a
+new GCP account for the moment.</p>
 <p>Investigating….</p>
 </section><section><h2 class="section-heading" id="prerequisites">Prerequisites<a class="anchor" aria-label="anchor" href="#prerequisites"></a></h2>
 <hr class="half-width"><div class="section level3">
diff --git a/instructor/aio.html b/instructor/aio.html
index 1d403a5..934d383 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -618,7 +618,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
   How to change them?
   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
 <div class="accordion-body">
 <p>If they are not what you expect (in case you have many), change them
 with</p>
@@ -669,6 +669,16 @@ <h3 id="billing-account">Billing account?<a class="anchor" aria-label="anchor" h
 <p>If you created the project from the command line without specifying
 the billing account, you must link it to an existing billing
 account.</p>
+<div id="accordionSpoiler2" class="accordion spoiler-accordion accordion-flush">
+<div class="accordion-item">
+<button class="accordion-button spoiler-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSpoiler2" aria-expanded="false" aria-controls="collapseSpoiler2">
+  <h3 class="accordion-header" id="headingSpoiler2">
+  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div>
+  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 class="accordion-body">
 <p>First list the billing accounts</p>
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -689,6 +699,10 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <pre class="sourceCode bash" tabindex="0"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" tabindex="-1"></a><span class="ex">gcloud</span> billing projects link <span class="op">&lt;</span>PROJECT_ID<span class="op">&gt;</span> --billing-account <span class="op">&lt;</span>ACCOUNT_ID<span class="op">&gt;</span></span></code></pre>
 </div>
 </div>
+</div>
+</div>
+</div>
+</div>
 <div class="section level3">
 <h3 id="choose-your-region">Choose your region<a class="anchor" aria-label="anchor" href="#choose-your-region"></a>
 </h3>
@@ -775,8 +789,7 @@ <h3 class="callout-title">Key Points</h3>
 files.</li>
 <li>The storage cost depends on the volume stored and for this type of
 processing is very small.</li>
-<li>The download of the output files for the bucket has a significant
-cost.</li>
+<li>The download of big output files from the bucket can be costly.</li>
 </ul>
 </div>
 </div>
@@ -821,11 +834,15 @@ <h3 class="card-title">Objectives</h3>
 </div>
 </div>
 </div>
-<section><h2 class="section-heading" id="work-in-progress">Work in progress<a class="anchor" aria-label="anchor" href="#work-in-progress"></a>
+<section><h2 class="section-heading" id="why-a-disk-image">Why a disk image?<a class="anchor" aria-label="anchor" href="#why-a-disk-image"></a>
 </h2>
 <hr class="half-width">
-<p>Building the disk image does not work for a new GCP account for the
-moment.</p>
+<p>The container image for the MiniAOD processing is very big and it
+needs to be pulled to the nodes of the cluster. It can take 30 mins to
+pull it. Making it available to the nodes of the cluster through a
+pre-built secondary disk image speeds up the workflow start.</p>
+<p>A script is available but building the disk image does not work for a
+new GCP account for the moment.</p>
 <p>Investigating….</p>
 </section><section><h2 class="section-heading" id="prerequisites">Prerequisites<a class="anchor" aria-label="anchor" href="#prerequisites"></a>
 </h2>
diff --git a/instructor/key-points.html b/instructor/key-points.html
index c1e2687..3c4280e 100644
--- a/instructor/key-points.html
+++ b/instructor/key-points.html
@@ -364,8 +364,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
 files.</li>
 <li>The storage cost depends on the volume stored and for this type of
 processing is very small.</li>
-<li>The download of the output files for the bucket has a significant
-cost.</li>
+<li>The download of big output files from the bucket can be costly.</li>
 </ul></section><section id="03-disk-image"><h2 class="section-heading"><a href="03-disk-image.html">Disk image</a></h2>
 <hr class="half-width">
 <ul>
diff --git a/key-points.html b/key-points.html
index 53a2e44..50886a9 100644
--- a/key-points.html
+++ b/key-points.html
@@ -362,8 +362,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
 files.</li>
 <li>The storage cost depends on the volume stored and for this type of
 processing is very small.</li>
-<li>The download of the output files for the bucket has a significant
-cost.</li>
+<li>The download of big output files from the bucket can be costly.</li>
 </ul></section><section id="03-disk-image"><h2 class="section-heading"><a href="03-disk-image.html">Disk image</a></h2>
 <hr class="half-width">
 <ul>
diff --git a/md5sum.txt b/md5sum.txt
index 126949a..baf7e00 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -5,8 +5,8 @@
 "index.md" "525d819d57772d499f55691b37cd616a" "site/built/index.md" "2024-10-10"
 "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" "1e2876b51fb3d76b52a115f0ede4f2be" "site/built/02-storage.md" "2024-10-16"
-"episodes/03-disk-image.md" "4c0eb1c3bf18effef3bac2a1acea9de4" "site/built/03-disk-image.md" "2024-10-16"
+"episodes/02-storage.md" "7ada170ff81f163e0c458aa1d6964e5b" "site/built/02-storage.md" "2024-10-16"
+"episodes/03-disk-image.md" "18784d64d72d5322f7d7acf15157e09d" "site/built/03-disk-image.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 821a6b3..9e0c708 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,4 +2,4 @@ pandoc: 3.1.11
 pkgdown: 2.1.1
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-10-16T10:04Z
+last_built: 2024-10-16T10:30Z