Fix shellcheck complaint

build.sh

@@ -216,7 +216,7 @@ for DOCKER_TARGET in "${DOCKER_TARGETS[@]}"; do
     TARGET_DOCKER_TAG="${TARGET_DOCKER_TAG}-${DOCKER_TARGET}"
   fi
   if [ -n "${GH_ACTION}" ]; then
-    echo "FINAL_DOCKER_TAG=${TARGET_DOCKER_TAG}" >> $GITHUB_ENV
+    echo "FINAL_DOCKER_TAG=${TARGET_DOCKER_TAG}" >> "$GITHUB_ENV"
     echo "::set-output name=skipped::false"
   fi
 

docker/docker-entrypoint.sh

@@ -8,6 +8,7 @@ set -e
 umask 002
 
 # Load correct Python3 env
+# shellcheck disable=SC1091
 source /opt/netbox/venv/bin/activate
 
 # Try to connect to the DB