Base/Dockerfile

-FROM ubuntu:20.04
+FROM --platform=linux/amd64 ubuntu:20.04
 MAINTAINER Stefano Alberto Russo <stefano.russo@inaf.it>
 
 #----------------------
@@ -12,7 +12,7 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update
 
 # Utilities
-RUN apt-get install -y nano telnet unzip wget git-core sudo
+RUN apt-get install -y sudo nano emacs vim screen telnet iputils-ping curl wget unzip git-core python3-pip python3-venv
 
 # Change APT user to allow some container runtimes properly work (i.e. Podman)
 RUN groupadd -g 600 _apt

BasicDesktop/Dockerfile

-FROM minimaldesktop
+FROM --platform=linux/amd64 minimaldesktop
 MAINTAINER Stefano Alberto Russo <stefano.russo@inaf.it>
 
 # Switch to root
@@ -49,10 +49,13 @@ COPY files/home_metauser_.config /metauser_home_vanilla/.config
 #COPY data/desktop-cf881dd7/metauser_home_vanilla/.config /metauser_home_vanilla/.config
 RUN chown -R metauser:metauser /metauser_home_vanilla/.config
 
-# Disable screensaver
+# Disable the X screensaver
 COPY files/dot_xscreensaver /metauser_home_vanilla/.xscreensaver
 RUN chown metauser:metauser /metauser_home_vanilla/.xscreensaver
 
+# Remove the screen locker package altogether
+RUN apt-get remove -y light-locker light-locker-settings
+
 # Disable logout dialog
 RUN chmod 000 /usr/bin/xfce4-session-logout
 

BasicDesktop/files/home_metauser_.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-power-manager.xml

+<?xml version="1.0" encoding="UTF-8"?>
+
+<channel name="xfce4-power-manager" version="1.0">
+  <property name="xfce4-power-manager" type="empty">
+    <property name="power-button-action" type="empty"/>
+    <property name="lock-screen-suspend-hibernate" type="empty"/>
+    <property name="logind-handle-lid-switch" type="empty"/>
+    <property name="blank-on-ac" type="int" value="0"/>
+    <property name="blank-on-battery" type="int" value="0"/>
+    <property name="dpms-enabled" type="bool" value="false"/>
+    <property name="dpms-on-ac-sleep" type="empty"/>
+    <property name="dpms-on-ac-off" type="empty"/>
+    <property name="dpms-on-battery-sleep" type="empty"/>
+    <property name="dpms-on-battery-off" type="empty"/>
+    <property name="show-panel-label" type="empty"/>
+    <property name="inactivity-sleep-mode-on-ac" type="empty"/>
+    <property name="inactivity-sleep-mode-on-battery" type="empty"/>
+    <property name="show-tray-icon" type="bool" value="false"/>
+  </property>
+</channel>
\ No newline at end of file

BasicDesktop/files/home_metauser_.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-screensaver.xml

+<?xml version="1.0" encoding="UTF-8"?>
+
+<channel name="xfce4-screensaver" version="1.0">
+  <property name="saver" type="empty">
+    <property name="mode" type="int" value="0"/>
+    <property name="enabled" type="bool" value="false"/>
+  </property>
+  <property name="lock" type="empty">
+    <property name="enabled" type="bool" value="false"/>
+  </property>
+</channel>
\ No newline at end of file

JupyterNotebook/Dockerfile

-FROM base
+FROM --platform=linux/amd64 base
 MAINTAINER Stefano Alberto Russo <stefano.russo@inaf.it>
 
 # Switch to root

MinimalDesktop/Dockerfile

-FROM x11web
+FROM --platform=linux/amd64 x11web
 MAINTAINER Stefano Alberto Russo <stefano.russo@inaf.it>
 
 # Switch to root

SSH/Dockerfile

-FROM base
+FROM --platform=linux/amd64 base
 MAINTAINER Stefano Alberto Russo <stefano.russo@inaf.it>
 
 # Switch to root

X11Web/Dockerfile

-FROM base
+FROM --platform=linux/amd64 base
 MAINTAINER Stefano Alberto Russo <stefano.russo@inaf.it>
 
 # Switch to root

XCalc/Dockerfile

-FROM ssh
+FROM --platform=linux/amd64 ssh
 MAINTAINER Stefano Alberto Russo <stefano.russo@inaf.it>
 
 # Switch to root

build_all.sh

 #!/bin/bash
-cd Base && ./build.sh && cd ..
-cd SSH && ./build.sh && cd ..
-cd XCalc && ./build.sh && cd ..
-cd X11web && ./build.sh && cd ..
-cd MinimalDesktop && ./build.sh && cd ..
-cd BasicDesktop && ./build.sh && cd ..
-cd JupyterNotebook && ./build.sh && cd ..
+set -e
+
+echo "==========================="
+echo "Building Base..."
+echo "==========================="
+cd Base
+./build.sh
+cd ..
+
+echo "==========================="
+echo "Building SSH..."
+echo "==========================="
+cd SSH
+./build.sh
+cd ..
+
+echo "==========================="
+echo "Building Xcalc..."
+echo "==========================="
+cd XCalc
+./build.sh
+cd ..
+
+echo "==========================="
+echo "Building X11web..."
+echo "==========================="
+cd X11web
+./build.sh
+cd ..
+
+echo "==========================="
+echo "Building MinimalDesktop..."
+echo "==========================="
+cd MinimalDesktop
+./build.sh
+cd ..
+
+echo "==========================="
+echo "Building BasicDesktop..."
+echo "==========================="
+cd BasicDesktop
+./build.sh
+cd ..
+
+echo "==========================="
+echo "Building JupyterNotebook..."
+echo "==========================="
+cd JupyterNotebook
+./build.sh
+cd ..
+