diff --git a/.dockerignore b/.dockerignore
index dd3614d..fd941e7 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -4,6 +4,9 @@ node_modules/
 # Build output
 dist/
 
+# Prisma generated client (regenerated fresh during build; a stale host copy would clobber it via `COPY . .`)
+src/generated/
+
 # Environment files
 .env
 .env.*
diff --git a/Dockerfile b/Dockerfile
index 2c11a21..c6318ad 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -40,7 +40,7 @@ FROM deps-dev AS build
 # Keeping them separate allows Prisma generate to be cached
 # when only application source code changes.
 COPY prisma ./prisma
-COPY prisma.config.ts ./
+COPY prisma.config.ts tsconfig.json ./
 COPY src/loadEnvFile.ts ./src/loadEnvFile.ts
 
 ENV DATABASE_URL="file:/tmp/build.db"