Automate provisioning and deployment of VPS

In order to perform that I had to remove Terraform's =.tfstate= files from the
repository. Terraform does support "backends" for storing the state files, but I
settled for storing it on a separate repo (vps-state).

For now it solves the state management problem:
- it has history of states;
- all state files are GPG encrypted;
- there's no coordination however, but only the CI should perform a deploy in
order to avoid race conditions.

I had to add GPG and SSH keys to sr.ht to achieve that:
- SSH public key to my profile to authorize it to push to vps-state repo;
- SSH private key to the secret builds.sr.ht environment to enable push to the
repository from the pipeline;
- GPG public key to git-crypt to make it possible for the pipeline to unlock the
encrypted content;
- GPG private key to the secret builds.sr.ht environment to enable decrypting
git-crypt content from the pipeline.

In order to avoid divergent environment from local and CI, the ./provision.sh
script is ran through nix-shell.

1 files changed, 1 insertions, 1 deletions

diff --git a/terraform.tfstate b/terraform.tfstate
index e3dc257..4fa5ae3 120000
--- a/terraform.tfstate
+++ b/terraform.tfstate
@@ -1 +1 @@
-secrets/terraform.tfstate
\ No newline at end of file
+../vps-state/secrets/terraform.tfstate
\ No newline at end of file