MySQL Plugin: create and link my.cnf to allow configuring MySQL

Author: clessg

docs/app/docs/devbox_examples/databases/mysql.md

@@ -46,11 +46,16 @@ MYSQL_BASEDIR=.devbox/nix/profile/default
 MYSQL_HOME=./.devbox/virtenv/mysql/run
 MYSQL_DATADIR=./.devbox/virtenv/mysql/data
 MYSQL_UNIX_PORT=./.devbox/virtenv/mysql/run/mysql.sock
-MYSQL_PID_FILE=./.devbox/mysql/run/mysql.pid
+MYSQL_PID_FILE=./.devbox/virtenv/mysql/run/mysql.pid
+MYSQL_CONF=./devbox.d/mysql/my.cnf
 ```
 
 ### Files
 
+The following helper file will be created in your project directory:
+
+* \{PROJECT_DIR\}/devbox.d/mysql/my.cnf
+
 The plugin will also create the following helper files in your project's `.devbox/virtenv` folder:
 
 * mysql/flake.nix

plugins/mysql.json

@@ -7,13 +7,15 @@
       "MYSQL_HOME": "{{ .Virtenv }}/run",
       "MYSQL_DATADIR": "{{ .Virtenv }}/data",
       "MYSQL_UNIX_PORT": "{{ .Virtenv }}/run/mysql.sock",
-      "MYSQL_PID_FILE": "{{ .Virtenv }}/run/mysql.pid"
+      "MYSQL_PID_FILE": "{{ .Virtenv }}/run/mysql.pid",
+      "MYSQL_CONF": "{{ .DevboxDir }}/my.cnf"
     },
     "create_files": {
       "{{ .Virtenv }}/run": "",
       "{{ .Virtenv }}/flake/flake.nix": "mysql/flake.nix",
       "{{ .Virtenv }}/setup_db.sh": "mysql/setup_db.sh",
-      "{{ .Virtenv }}/process-compose.yaml": "mysql/process-compose.yaml"
+      "{{ .Virtenv }}/process-compose.yaml": "mysql/process-compose.yaml",
+      "{{ .DevboxDir }}/my.cnf": "mysql/my.cnf"
     },
     "packages": {
       "path:{{ .Virtenv }}/flake": {},

plugins/mysql/my.cnf

@@ -0,0 +1,4 @@
+# MySQL configuration file
+
+# [mysqld]
+# skip-log-bin

plugins/mysql/setup_db.sh

@@ -1,7 +1,11 @@
 #! bash
 
 if [ ! -d "$MYSQL_DATADIR" ]; then
-# Install the Database
-   mkdir $MYSQL_DATADIR
-   mysqld --initialize-insecure
+  # Install the Database
+  mkdir $MYSQL_DATADIR
+  mysqld --initialize-insecure
 fi
+
+if [ -e "$MYSQL_CONF" ]; then
+  ln -fs "$MYSQL_CONF" "$MYSQL_HOME/my.cnf"
+fi