Use mysql to match our installation

.envrc.sample

@@ -1,14 +1,14 @@
 export APP_INI_VERSION=v1
 export APP_NAME=gitea
-export DB_HOST=postgres:5432
+export DB_HOST=mariadb:3306
 export DB_NAME=gitea
 export DB_PASSWD_VERSION=v1
-export DB_TYPE=postgres
+export DB_TYPE=mysql
 export DB_USER=gitea
 export DOMAIN=gitea.swarm.autonomic.zone
 export INTERNAL_TOKEN_VERSION=v1
 export JWT_SECRET_VERSION=v1
-export LETS_ENCRYPT_ENV=staging
+export LETS_ENCRYPT_ENV=production
 export SECRET_KEY_VERSION=v1
 export SSH_HOST_PORT=2222
 export STACK_NAME=gitea

compose.yml

@@ -3,7 +3,7 @@ version: "3.8"
 
 services:
   gitea:
-    image: "gitea/gitea:1.11.5"
+    image: "gitea/gitea:1.12.1"
     configs:
       - source: app_ini
         target: /data/gitea/conf/app.ini
@@ -47,18 +47,20 @@ services:
         - "traefik.tcp.routers.gitea-ssh.entrypoints=gitea-ssh"
         - "traefik.tcp.services.gitea-ssh.loadbalancer.server.port=2222"
 
-  postgres:
-    image: "postgres:12"
+  mariadb:
+    image: "mariadb:10.5"
+    environment:
+      - MYSQL_DATABASE=gitea
+      - MYSQL_USER=gitea
+      - MYSQL_PASSWORD_FILE=/run/secrets/db_passwd
+      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db_root_passwd
     secrets:
       - db_passwd
-    environment:
-      - POSTGRES_USER=gitea
-      - POSTGRES_DB=gitea
-      - POSTGRES_PASSWORD_FILE=/run/secrets/db_passwd
+      - db_root_passwd
+    volumes:
+      - "mariadb:/var/lib/mysql"
     networks:
       - internal
-    volumes:
-      - "db:/var/lib/postgresql/data"
 
 networks:
   internal:
@@ -87,4 +89,4 @@ secrets:
 
 volumes:
   git:
-  db:
+  mariadb: