Adding self installation command for fabrica

.packer/recipes/ubuntu/20.04/scripts/provision-minimal.sh

@@ -0,0 +1,57 @@
+ #!/bin/bash -e
+
+set -xeo pipefail
+
+# For SHASUM
+apt-get -y install perl ifupdown
+
+# Download OpenNebula context package
+ONE_CONTEXT_VERSION=5.8.0
+ONE_CONTEXT_BUILD_SUFFIX=-1
+ONE_CONTEXT_SHASUM=cfcc8aa2e51396935e8d2a507f996838201515b5
+ONE_CONTEXT_URL="https://github.com/OpenNebula/addon-context-linux/releases/download/v${ONE_CONTEXT_VERSION}/one-context_${ONE_CONTEXT_VERSION}${ONE_CONTEXT_BUILD_SUFFIX}.deb"
+ONE_CONTEXT_PACKAGE_DEST=/tmp/one-context.deb
+
+wget -O- "${ONE_CONTEXT_URL}" > "${ONE_CONTEXT_PACKAGE_DEST}"
+echo "${ONE_CONTEXT_SHASUM}  ${ONE_CONTEXT_PACKAGE_DEST}" | shasum -c
+
+# Purge cloud-init
+apt-get purge -y cloud-init perl
+
+# Install onecontext
+dpkg -i "${ONE_CONTEXT_PACKAGE_DEST}" || apt-get install -fy
+
+# Update hostname
+hostnamectl set-hostname "${VM_NAME}"
+
+# Disable root login with password
+# sed -i 's/^PermitRootLogin.*$/PermitRootLogin without-password/' /etc/ssh/sshd_config
+
+# Run dhclient on one-context service failure
+mkdir -p /etc/systemd/system/one-context.service.d
+cat > /etc/systemd/system/one-context.service.d/dhclient-on-fail.conf <<EOF
+[Unit]
+OnFailure=one-dhclient.service
+EOF
+
+cat > /etc/systemd/system/one-dhclient.service <<EOF
+[Unit]
+Description=Execute dhclient
+
+[Service]
+ExecStart=/sbin/dhclient
+EOF
+chmod 664 /etc/systemd/system/one-dhclient.service
+
+# Disable auto-upgrade
+systemctl disable unattended-upgrades
+systemctl disable apt-daily
+systemctl disable apt-daily.timer
+systemctl disable apt-daily-upgrade
+
+# Cleanup
+rm -f "${ONE_CONTEXT_PACKAGE_DEST}"
+apt-get -y clean
+
+# Force sync
+sync