ci: add upload artifacts step

.drone.yml

@@ -44,7 +44,7 @@ steps:
       - export TARGET_DIR="$${DRONE_REPO}/$${DRONE_BUILD_NUMBER}"
       - echo env var TARGET_DIR is set to $$TARGET_DIR
       - "mkdir ~/.ssh && chmod 700 ~/.ssh"
-      - "echo $$PRIVATE_SSH_KEY > ~/.ssh/id_ed25519 && chmod 600 ~/.ssh/id_ed25519"
+      - echo "$$PRIVATE_SSH_KEY" > ~/.ssh/id_ed25519 && chmod 600 ~/.ssh/id_ed25519
       - eval "$(/run/current-system/sw/bin/ssh-agent)"
       - /run/current-system/sw/bin/ssh-add ~/.ssh/id_ed25519
       - nix flake new --template "git+https://git.greenbaum.cloud/dev/tritonshell?ref=main" ./tritonshell
@@ -116,6 +116,6 @@ data: cSWd6rIg8Z51hD+KMenYPX669qb6PWdh9V80Z1YpED68Ffoy73tWEoBjEs2pKUJpcL8qGxMjj5
 
 ---
 kind: signature
-hmac: 6fb9e65c20cfcad0f2c354b152bf5d92e75ae6ac1ba783310b0d7cb4b1feb39e
+hmac: 5cbd1354b408875cf235d86cc5b98e109609106237a1337a130391cbf5cd9355
 
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