Fix wasp start db to use Postgres 18 explicitly (#3323)

Author: infomiho

examples/tutorials/TodoApp/main.wasp

@@ -1,6 +1,6 @@
 app TodoApp {
   wasp: {
-    version: "^0.18.1" // Pins the version of Wasp to use.
+    version: "^0.18.2" // Pins the version of Wasp to use.
   },
   title: "TodoApp", // Used as the browser tab title. Note that all strings in Wasp are double quoted!
   head: [

examples/tutorials/TodoApp/package-lock.json

@@ -1,6 +1,6 @@
 app TodoApp {
   wasp: {
-    version: "^0.18.1" // Pins the version of Wasp to use.
+    version: "^0.18.2" // Pins the version of Wasp to use.
   },
   title: "TodoApp", // Used as the browser tab title. Note that all strings in Wasp are double quoted!
   head: [

examples/tutorials/TodoAppTs/main.wasp

@@ -2,7 +2,7 @@ import { ActionConfig, App, ExtImport } from "wasp-config";
 
 const app = new App("waspello", {
   title: "Waspello",
-  wasp: { version: "^0.18.1" },
+  wasp: { version: "^0.18.2" },
 });
 
 app.auth({

examples/waspello/main.wasp.ts

@@ -1,6 +1,6 @@
 app waspleau {
   wasp: {
-    version: "^0.18.1"
+    version: "^0.18.2"
   },
 
   title: "Waspleau",

examples/waspleau/main.wasp

@@ -1,6 +1,6 @@
 app whereDoWeEat {
   wasp: {
-    version: "^0.18.1"
+    version: "^0.18.2"
   },
   title: "where-do-we-eat",
   client: {

examples/waspleau/package-lock.json

@@ -1,6 +1,6 @@
 app waspAi {
   wasp: {
-    version: "^0.18.1"
+    version: "^0.18.2"
   },
   title: "MAGE - GPT Web App Generator ✨",
   head: [

examples/websockets-realtime-voting/main.wasp

@@ -1,5 +1,11 @@
 # Changelog
 
+## 0.18.2
+
+### 🐞 Bug fixes
+
+- Wasp dev database (`wasp start db`) now uses a pinned PostgreSQL version (`postgres:18`) with the correct volume mount path. ([#3323](https://github.com/wasp-lang/wasp/pull/3323))
+
 ## 0.18.1
 
 ### 🐞 Bug fixes

mage/main.wasp

@@ -107,31 +107,24 @@ startPostgreDevDb waspProjectDir appName = do
   --   only when initializing the database -> if it already exists, they will be ignored.
   --   This is how the postgres Docker image works.
   let command =
-        printf
-          ( unwords
-              [ "docker run",
-                "--name %s",
-                "--rm",
-                "--publish %d:5432",
-                "-v %s:/var/lib/postgresql/data",
-                "--env POSTGRES_PASSWORD=%s",
-                "--env POSTGRES_USER=%s",
-                "--env POSTGRES_DB=%s",
-                "postgres"
-              ]
-          )
-          dockerContainerName
-          Dev.Postgres.defaultDevPort
-          dockerVolumeName
-          Dev.Postgres.defaultDevPass
-          Dev.Postgres.defaultDevUser
-          dbName
+        unwords
+          [ "docker run",
+            printf "--name %s" dockerContainerName,
+            "--rm",
+            printf "--publish %d:5432" Dev.Postgres.defaultDevPort,
+            printf "-v %s:%s" dockerVolumeName postgresDockerVolumeMountPath,
+            printf "--env POSTGRES_PASSWORD=%s" Dev.Postgres.defaultDevPass,
+            printf "--env POSTGRES_USER=%s" Dev.Postgres.defaultDevUser,
+            printf "--env POSTGRES_DB=%s" dbName,
+            postgresDockerImage
+          ]
   liftIO $ callCommand command
   where
     dockerVolumeName = makeWaspDevDbDockerVolumeName waspProjectDir appName
     dockerContainerName = makeWaspDevDbDockerContainerName waspProjectDir appName
     dbName = Dev.Postgres.makeDevDbName waspProjectDir appName
     connectionUrl = Dev.Postgres.makeDevConnectionUrl waspProjectDir appName
+    (postgresDockerImage, postgresDockerVolumeMountPath) = waspDevDbPostgresDockerImageSpec
 
     throwIfDevDbPortIsAlreadyInUse :: Command ()
     throwIfDevDbPortIsAlreadyInUse = do
@@ -171,3 +164,18 @@ makeWaspDevDbDockerContainerName waspProjectDir appName =
 
 maxDockerContainerNameLength :: Int
 maxDockerContainerNameLength = 63
+
+type PostgresDockerImage = String
+
+type PostgresDockerVolumeMountPath = String
+
+-- | We pin the Postgres Docker image to avoid issues when a new major version of Postgres
+-- is released. We aim to occasionally update this version in Wasp releases.
+-- If you bump the Postgres version here, also check if `postgresDockerVolumeMountPath`
+-- is still correct.
+waspDevDbPostgresDockerImageSpec :: (PostgresDockerImage, PostgresDockerVolumeMountPath)
+waspDevDbPostgresDockerImageSpec = ("postgres:18", postgresDockerVolumeMountPath)
+  where
+    -- Path inside the Postgres Docker container where the database files are stored.
+    postgresDockerVolumeMountPath :: PostgresDockerVolumeMountPath
+    postgresDockerVolumeMountPath = "/var/lib/postgresql"