Add tarball script for CI

Allows the same script to be executed by GitLab and Gitea runners.

.gitea/workflows/ci.yaml

@@ -0,0 +1,9 @@
+name: CI
+on: push
+
+jobs:
+  build:lagarto-ox-tarball:
+    runs-on: native
+    steps:
+      - uses: https://gitea.com/ScMi1/checkout@v1.4
+      - run: ci/make-tarball.sh

.gitlab-ci.yml

@@ -13,14 +13,4 @@ build:lagarto-ox-tarball:
     - nix
   script:
     - nix build -L .#nixosConfigurations.lagarto-ox.pkgs.fpga-tarball
-    - cd result
-    - out=/ceph/home/gitlab-runner/public_html/nixos-riscv/
-    - fn=$(ls | head -1)
-    - cp $fn $out/$fn
-    - rm -f $out/latest.tar.zst
-    - ln -s $out/$fn $out/latest.tar.zst
-    - cd ..
-    - rm result
-    - |
-      echo "Pinned: https://jungle.bsc.es/~gitlab-runner/nixos-riscv/$fn"
-      echo "Latest: https://jungle.bsc.es/~gitlab-runner/nixos-riscv/latest.tar.zst"
+    - ci/make-tarball.sh result && rm result

ci/make-tarball.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+set -e
+
+nix build -L '.#nixosConfigurations.lagarto-ox.pkgs.fpga-tarball'
+
+cd result
+out=/ceph/home/gitlab-runner/public_html/nixos-riscv/
+fn=$(ls | head -1)
+cp "$fn" "$out/$fn"
+rm -f "$out/latest.tar.zst"
+ln -s "$out/$fn" "$out/latest.tar.zst"
+rm result
+
+echo "Pinned: https://jungle.bsc.es/~gitlab-runner/nixos-riscv/$fn"
+echo "Latest: https://jungle.bsc.es/~gitlab-runner/nixos-riscv/latest.tar.zst"