diff --git a/README.md b/README.md
index e5030f5..808f462 100644
--- a/README.md
+++ b/README.md
@@ -7,10 +7,17 @@ Communication server using the Nexlink protocol
 ### Install dependencies
 - npm install
 
-### Set up and start postgres database
+### Set up and start postgres database (docker)
 - docker compose pull
 - docker compose up
 
+### Set up and start postgres database (podman)
+- podman-compose pull
+- podman-compose up
+
+### Set up .env file and fill in the environment variables
+- cp env .env
+
 ### Create database migrations
 - npx prisma migrate dev
 
diff --git a/env b/env
index 0b481ec..5534241 100644
--- a/env
+++ b/env
@@ -1 +1,2 @@
 DATABASE_URL="postgresql://tetheruser:password@localhost:5432/tetherdb"
+JWT_SECRET=""
diff --git a/prisma/migrations/20251224120739_invites/migration.sql b/prisma/migrations/20251224120739_invites/migration.sql
new file mode 100644
index 0000000..167cdc0
--- /dev/null
+++ b/prisma/migrations/20251224120739_invites/migration.sql
@@ -0,0 +1,17 @@
+-- CreateTable
+CREATE TABLE "Invite" (
+    "id" TEXT NOT NULL,
+    "communityId" TEXT,
+    "totalInvites" INTEGER NOT NULL DEFAULT 0,
+    "remainingInvites" INTEGER NOT NULL DEFAULT 0,
+    "creationDate" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "expirationDate" TIMESTAMP(3),
+
+    CONSTRAINT "Invite_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Invite_id_key" ON "Invite"("id");
+
+-- AddForeignKey
+ALTER TABLE "Invite" ADD CONSTRAINT "Invite_communityId_fkey" FOREIGN KEY ("communityId") REFERENCES "Community"("id") ON DELETE SET NULL ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 85162b6..06673fb 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -1,53 +1,64 @@
 generator client {
-    provider   = "prisma-client"
-    output     = "../src/generated/prisma"
-    engineType = "client"
+  provider   = "prisma-client"
+  output     = "../src/generated/prisma"
+  engineType = "client"
 }
 
 datasource db {
-    provider = "postgresql"
+  provider = "postgresql"
 }
 
 model Community {
-    id          String    @id @unique @default(uuid())
-    name        String    @unique
-    description String?
-    members     User[]
-    Channel     Channel[]
-    Role        Role[]
+  id          String    @id @unique @default(uuid())
+  name        String    @unique
+  description String?
+  members     User[]
+  Channel     Channel[]
+  Role        Role[]
+  invites     Invite[]
 }
 
 model Channel {
-    id          String     @id @unique @default(uuid())
-    name        String?
-    community   Community? @relation(fields: [communityId], references: [id])
-    communityId String?
+  id          String     @id @unique @default(uuid())
+  name        String?
+  community   Community? @relation(fields: [communityId], references: [id])
+  communityId String?
 }
 
 model Role {
-    id          String    @id @unique @default(uuid())
-    name        String?
-    community   Community @relation(fields: [communityId], references: [id])
-    communityId String
+  id          String    @id @unique @default(uuid())
+  name        String?
+  community   Community @relation(fields: [communityId], references: [id])
+  communityId String
 }
 
 model User {
-    id           String     @id @unique @default(uuid())
-    username     String     @unique
-    email        String?    @unique
-    passwordHash String?
-    description  String?
-    admin        Boolean    @default(false)
-    registerDate DateTime   @default(now())
-    lastLogin    DateTime?
-    Community    Community? @relation(fields: [communityId], references: [id])
-    communityId  String?
-    Session      Session[]
+  id           String     @id @unique @default(uuid())
+  username     String     @unique
+  email        String?    @unique
+  passwordHash String?
+  description  String?
+  admin        Boolean    @default(false)
+  registerDate DateTime   @default(now())
+  lastLogin    DateTime?
+  Community    Community? @relation(fields: [communityId], references: [id])
+  communityId  String?
+  Session      Session[]
 }
 
 model Session {
-    id     String @id @unique @default(uuid())
-    owner  User   @relation(fields: [userId], references: [id])
-    token  String
-    userId String
+  id     String @id @unique @default(uuid())
+  owner  User   @relation(fields: [userId], references: [id])
+  token  String
+  userId String
+}
+
+model Invite {
+  id               String     @id @unique @default(uuid())
+  Community        Community? @relation(fields: [communityId], references: [id])
+  communityId      String?
+  totalInvites     Int        @default(0)
+  remainingInvites Int        @default(0)
+  creationDate     DateTime   @default(now())
+  expirationDate   DateTime?
 }