fix: Ignore empty MAC address (#36)

.dockerignore

@@ -6,7 +6,10 @@
 .gitmodules
 Dockerfile
 Dockerfile.archive
+compose.yml
+compose.yaml
 docker-compose.yml
+docker-compose.yaml
 
 *.md
 

src/network.sh

@@ -251,9 +251,8 @@ getInfo() {
 
   if [ -z "$MAC" ]; then
     local file="$STORAGE/$PROCESS.mac"
-    if [ -f "$file" ]; then
-      MAC=$(<"$file")
-    else
+    [ -f "$file" ] && MAC=$(<"$file")
+    if [ -z "$MAC" ]; then
       # Generate MAC address based on Docker container ID in hostname
       MAC=$(echo "$HOST" | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/')
       echo "${MAC^^}" > "$file"