Merge pull request #49 from 2m/fix/just-commands-2m

Add helper just commands

Author: 2m

.gitignore

@@ -1,2 +1,3 @@
 .idea
 *.iml
+target

justfile

@@ -0,0 +1,12 @@
+pwd := env_var('PWD')
+
+# fetch base image and build arch-pkgbuild-builder
+build:
+  docker pull martynas/archlinux
+  docker build -t arch-pkgbuild-builder .
+
+# run a comment on AUR project, like `just run-on-aur ucm-bin pkgbuild`
+run-on-aur project command:
+  mkdir -p target
+  git -C target/{{project}} pull || git clone https://aur.archlinux.org/{{project}}.git target/{{project}}
+  docker run --rm -v {{pwd}}/target/{{project}}:/home/build -v /tmp/gh:/github/home arch-pkgbuild-builder {{command}} .