Streamline the push and build process

.gitlab/always.yml

@@ -0,0 +1,38 @@
+generate:
+  stage: generate
+  artifacts:
+    paths:
+      - distros/**/*.pkrvars.hcl
+    reports:
+      dotenv: build.env
+  script: nix run ".#generate"
+
+continue:
+  stage: generate
+  artifacts:
+    paths:
+      - .gitlab-ci-build.yml
+  script:
+    - nix build ".#continue"
+    - cp result .gitlab-ci-build.yml
+    - cat result
+
+shellcheck:
+  stage: generate
+  script: nix run ".#shellcheck"
+
+flake-check:
+  stage: generate
+  script: nix flake check
+
+validate:
+  stage: check
+  needs:
+    - generate
+  cache:
+    - key:
+        files:
+          - sources/build.pkr.hcl
+      paths:
+        - ./packer_config/
+  script: nix run ".#validate"

.gitlab/build.yml

@@ -0,0 +1,27 @@
+# These jobs actually fetch the downloads and trigger the
+# target builds. I don't want to do that on every single push,
+# but only when I'm part of a merge request or release event
+
+# Makes sure that all of the ISO files we are looking for are
+# present on the S3 buckets that we use
+downloads:
+  stage: check
+  retry: 2
+  needs:
+    - generate
+  cache:
+    - key:
+        files:
+          - sources/build.pkr.hcl
+      paths:
+        - ./packer_config/
+  script: nix run ".#cache"
+
+trigger:
+  stage: trigger
+  trigger:
+    include:
+      - artifact: .gitlab-ci-build.yml
+        job: continue
+  variables:
+    PARENT_PIPELINE_ID: $CI_PIPELINE_ID