feat: fetch master during build

- fetch master branch during build.sh process
- ensure the clean target is called with the default

Makefile

@@ -17,7 +17,7 @@ DIRS := $(shell find $(IMAGES_PATH) -mindepth 3 -maxdepth 3 -type d | sed 's|$(I
 .PHONY: list $(DIRS)
 
 .DEFAULT_GOAL := default
-default:
+default: clean
 	./ci/build.sh
 
 # Make all images

ci/build.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 # Check for changes in images/ folder and the builds/ folder
+git fetch origin master:master
 if [ "$(git branch --show-current)" = "master" ]; then
   builds_changes=$(git diff --name-only HEAD^...master | grep -E '^builds/')
   images_changes=$(git diff --name-only HEAD^...master | grep -E '^images/')