diff --git a/Config/ProvisionTests/Dockerfiles/arch b/Config/ProvisionTests/Dockerfiles/arch
index 3bd8298..32eda2d 100644
--- a/Config/ProvisionTests/Dockerfiles/arch
+++ b/Config/ProvisionTests/Dockerfiles/arch
@@ -7,7 +7,9 @@ ENV PACKAGES="$PACKAGES"
 ARG EXTRA_ARCH
 ENV EXTRA_ARCH="$EXTRA_ARCH"
 
+# Use the image as it comes, do not upgrade it, so that it stays reproducible.
 #RUN pacman -Syu --noconfirm
+
 RUN pacman -Sy  --noconfirm $PACKAGES $EXTRA_ARCH
 
 COPY bin/main.sh /root/main.sh
diff --git a/Config/ProvisionTests/Dockerfiles/debian b/Config/ProvisionTests/Dockerfiles/debian
index 73d65d2..15156b7 100644
--- a/Config/ProvisionTests/Dockerfiles/debian
+++ b/Config/ProvisionTests/Dockerfiles/debian
@@ -7,7 +7,9 @@ ENV PACKAGES="$PACKAGES"
 ARG EXTRA_DEBIAN
 ENV EXTRA_DEBIAN="$EXTRA_DEBIAN"
 
+# Use the image as it comes, do not upgrade it, so that it stays reproducible.
 #RUN apt update && apt dist-upgrade -y
+
 RUN apt update && apt install -y $PACKAGES $EXTRA_DEBIAN
 
 COPY bin/main.sh /root/main.sh
diff --git a/Config/ProvisionTests/Dockerfiles/fedora b/Config/ProvisionTests/Dockerfiles/fedora
index a0655af..3fb12bb 100644
--- a/Config/ProvisionTests/Dockerfiles/fedora
+++ b/Config/ProvisionTests/Dockerfiles/fedora
@@ -7,7 +7,9 @@ ENV PACKAGES="$PACKAGES"
 ARG EXTRA_FEDORA
 ENV EXTRA_FEDORA="$EXTRA_FEDORA"
 
+# Use the image as it comes, do not upgrade it, so that it stays reproducible.
 #RUN dnf upgrade --refresh -y
+
 RUN dnf install --refresh -y $PACKAGES $EXTRA_FEDORA
 
 COPY bin/main.sh /root/main.sh
diff --git a/Config/ProvisionTests/Dockerfiles/opensuse b/Config/ProvisionTests/Dockerfiles/opensuse
index a41c21f..06e9392 100644
--- a/Config/ProvisionTests/Dockerfiles/opensuse
+++ b/Config/ProvisionTests/Dockerfiles/opensuse
@@ -7,7 +7,9 @@ ENV PACKAGES="$PACKAGES"
 ARG EXTRA_OPENSUSE
 ENV EXTRA_OPENSUSE="$EXTRA_OPENSUSE"
 
+# Use the image as it comes, do not upgrade it, so that it stays reproducible.
 #RUN zypper -n refresh && zypper -n dist-upgrade -y
+
 RUN zypper -n refresh && zypper -n install -y $PACKAGES $EXTRA_OPENSUSE
 
 COPY bin/main.sh /root/main.sh
diff --git a/Config/ProvisionTests/Dockerfiles/ubuntu b/Config/ProvisionTests/Dockerfiles/ubuntu
index f4ab326..36d1b45 100644
--- a/Config/ProvisionTests/Dockerfiles/ubuntu
+++ b/Config/ProvisionTests/Dockerfiles/ubuntu
@@ -7,7 +7,9 @@ ENV PACKAGES="$PACKAGES"
 ARG EXTRA_UBUNTU
 ENV EXTRA_UBUNTU="$EXTRA_UBUNTU"
 
+# Use the image as it comes, do not upgrade it, so that it stays reproducible.
 #RUN apt update && apt dist-upgrade -y
+
 RUN apt update && apt install -y $PACKAGES $EXTRA_UBUNTU
 
 COPY bin/main.sh /root/main.sh