feat: add CI test stage

Closes #31

.gitlab-ci.yml

@@ -20,7 +20,7 @@ build:
     - NPM_VERSION=$(grep '"version":' package.json -m 1 | cut -d '"' -f 4)
     - RELEASE_TAR=card-templates-$NPM_VERSION.tar.gz
     - RELEASE_TAR_URL="https://gitlab.phaidra.org/kartenaale/build/card-templates/-/jobs/$CI_JOB_ID/artifacts/raw/$RELEASE_TAR"
-    - BUILD_PREFIX="" make $RELEASE_TAR
+    - BUILD_PREFIX="" make check $RELEASE_TAR
     - echo BUILD_JOB_ID=$CI_JOB_ID > build.env
     - echo NPM_VERSION=$NPM_VERSION >> build.env
     - echo RELEASE_TAR=$RELEASE_TAR >> build.env

package.json

 {
   "name": "kartenaale-card-templates",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "HTML and data for Anki cards",
   "repository": "https://gitlab.phaidra.org/kartenaale/card-templates",
   "author": "Philipp Stadler <hello@phstadler.com>",