libfic: avoid stange MYSQL_HOST variable, expect IP or DN

docker-compose.yml

@@ -31,7 +31,7 @@ services:
     depends_on:
       - mysql
     environment:
-      - MYSQL_HOST=tcp(mysql:3306)
+      - MYSQL_HOST=mysql
       - FICCA_PASS
 
   fic-backend:
@@ -49,7 +49,7 @@ services:
     depends_on:
       - mysql
     environment:
-      - MYSQL_HOST=tcp(mysql:3306)
+      - MYSQL_HOST=mysql
 
   fic-frontend:
     build:

fickit-backend.yml

@@ -154,7 +154,7 @@ services:
     image: nemunaire/fic-admin:latest
     command: ["/srv/admin", "-bind=:8081", "-baseurl=/admin/", "-localimport=/mnt/fic"]
     env:
-      - MYSQL_HOST=tcp(db:3306)
+      - MYSQL_HOST=db
       - FICCA_PASS=jee8AhloAith1aesCeQu5ahgIegaeM4K
     binds:
       - /etc/hosts:/etc/hosts:ro
@@ -179,7 +179,7 @@ services:
   - name: fic-backend
     image: nemunaire/fic-backend:latest
     env:
-      - MYSQL_HOST=tcp(db:3306)
+      - MYSQL_HOST=db
     binds:
       - /etc/hosts:/etc/hosts:ro
       - /var/lib/fic/teams:/srv/TEAMS

libfic/db.go

@@ -19,7 +19,12 @@ func DSNGenerator() string {
 	db_db := "fic"
 
 	if v, exists := os.LookupEnv("MYSQL_HOST"); exists {
-		db_host = v
+		db_host = "tcp(" + v + ":"
+		if p, exists := os.LookupEnv("MYSQL_PORT"); exists {
+			db_host += p + ")"
+		} else {
+			db_host += "3306)"
+		}
 	}
 	if v, exists := os.LookupEnv("MYSQL_PASSWORD"); exists {
 		db_password = v