Use Ansible instead of Bash for provisioning

The deployment is not quite working, and I'm unable to test right now:
DigitalOcean is returning 503 for my requests.

As of this commit, I can run =ansible-playbook provider.yml= more than once and
it will actually be idempotent.

Notes:
- SSH fingerprint are now taken from the public key file instead of manually
supplying it in the terraform template using the =digitalocean_ssh_key=
resource;
- use Ansible instead of ad-hoc Bash scripts for provisioning the Droplets
created by Terraform;
- use the =filename.env.extension= to create the concrete files in CI;
- use the =user_data= to add the know SSH key pair to the newly created Droplet;
- add =rotate-ssh-keys.sh= utils;

2 files changed, 3 insertions, 0 deletions

diff --git a/scripts/box/bash-aliases.sh b/scripts/box/bash-profile.sh
index 4ef035d..e24d333 100755
--- a/scripts/box/bash-aliases.sh
+++ b/scripts/box/bash-profile.sh
@@ -1,3 +1,4 @@
 #!/usr/bin/env bash
 
 alias l="ls -lahp --color"
+cd /home/vps/
diff --git a/scripts/box/run-backup-template.sh b/scripts/box/run-backup.env.sh
index 34184b9..e1ecdf0 100755
--- a/scripts/box/run-backup-template.sh
+++ b/scripts/box/run-backup.env.sh
@@ -2,6 +2,8 @@
 
 export BORG_REMOTE_PATH="${BORG_REMOTE_PATH}"
 export BORG_PASSPHRASE="${BORG_PASSPHRASE}"
+# The configured $BORG_REPO is already the rsync.net remote.
+# No need to send the files after the backup is done.
 borg create                                               \
      --verbose                                            \
      --stats                                              \