Use gitlab for CI

.builds/alpine.yml

@@ -1,19 +0,0 @@
-image: alpine/edge
-packages:
-  - meson
-  - samurai
-  - gtk4.0-dev
-  - tiff-dev
-  - zbar-dev
-tasks:
-  - build: |
-      cd megapixels
-      meson build
-      ninja -C build
-  - test: |
-      cd megapixels
-      ninja -C build test
-sources:
-  - https://git.sr.ht/~martijnbraam/megapixels
-artifacts:
-  - megapixels/build/megapixels

.builds/arch.yml

@@ -1,18 +0,0 @@
-image: archlinux
-packages:
-  - meson
-  - ninja
-  - gtk4
-  - zbar
-tasks:
-  - build: |
-      cd megapixels
-      meson build
-      ninja -C build
-  - test: |
-      cd megapixels
-      ninja -C build test
-sources:
-  - https://git.sr.ht/~martijnbraam/megapixels
-artifacts:
-  - megapixels/build/megapixels

.gitlab-ci.yml

@@ -0,0 +1,18 @@
+.build_template: &build_definition
+  script:
+    - meson build
+    - ninja -C build
+    - ninja -C build test
+
+build:debian:
+  image: debian:bookworm-slim
+  before_script:
+    - apt update && apt -y install gcc meson ninja-build libgtk-4-dev libtiff-dev libzbar-dev
+  <<: *build_definition
+
+build:alpine:
+  image: alpine:edge
+  before_script:
+    - apk add --no-cache build-base meson samurai gtk4.0-dev tiff-dev zbar-dev
+  <<: *build_definition
+