Update 'Dockerfile'

Dockerfile

@@ -36,11 +36,10 @@ RUN dpkg -i /tmp/packages-microsoft-prod.deb && \
     rm -f /tmp/packages-microsoft-prod.deb && \
     apt-get update && apt-get upgrade -y && apt-get install -y --no-install-recommends \
       ansible \
+      build-essential \
       curl \
       git \
       jq \
-#      libxml2-dev \
-#      libffi-dev \
       locales \
       netcat-openbsd \
       openssh-client \
@@ -49,10 +48,14 @@ RUN dpkg -i /tmp/packages-microsoft-prod.deb && \
     sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && \
     locale-gen && \
     curl https://omnitruck.chef.io/install.sh | bash -s -- -P inspec && \
+    gem update --system && gem update && \
     pwsh -Command "Set-PSRepository -Name 'PSGallery' -InstallationPolicy 'Trusted' -Verbose" && \
     pwsh -Command "Install-Module -Name 'powershell-yaml','VMware.PowerCLI' -Verbose" && \
     pwsh -Command "Set-PowerCLIConfiguration -Scope User -ParticipateInCEIP \$False -Confirm:\$False" && \
     sh /tmp/ovftool-installer --console --eulas-agreed --required && \
+    apt remove -y \
+      build-essential && \
+    apt autoremove -y && \
     rm -rf /var/lib/apt/lists/* && \
     rm -f /tmp/ovftool-installer