Add CI test to see if symlinks work

.circleci/config.yml

@@ -19,7 +19,7 @@ commands:
                 command: apk update
             - run:
                 name:    "Setup: Install build packages."
-                command: apk add bash python2 diffutils ca-certificates curl
+                command: apk add git bash python2 diffutils ca-certificates curl
             - run:
                 name:    "Setup: Install runtime packages."
                 command: apk add bat ripgrep ncurses
@@ -69,6 +69,17 @@ jobs:
                 name:    "Test: Consistency"
                 command: test/run.sh consistency-test
 
+    test-symlink:
+        executor: linux_alpine
+        steps:
+            - setup
+            - checkout
+            - run:
+                name:    "Symlink"
+                command: ln -s "$PWD/src/batgrep.sh" /tmp/batgrep
+            - run:
+                name:    "Test: Symlink"
+                command: /tmp/batgrep 'a' >/dev/null
 
 workflows:
     version: 2
@@ -79,4 +90,6 @@ workflows:
                 requires: [build]
             - test-consistency:
                 requires: [build]
+            - test-symlink:
+                requires: [build]