diff --git a/.gitignore b/.gitignore
index a6c485c..ebacbf4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ server/.idea/
 server/target/
 .idea/
 target/
+start_vpn.sh
diff --git a/api_spec.md b/api_spec.md
new file mode 100644
index 0000000..9e4c74a
--- /dev/null
+++ b/api_spec.md
@@ -0,0 +1,54 @@
+# Meeting endpoint /meeting
+## User Management is not supported yet
+
+DB Migration -> Konsti
+
+#Req-Body POST /meeting json
+
+{
+  title: "string",
+  description: "string", # optional
+  links: "string", # optional
+  date_from: "string (dd-mm-yyyy:hh:mm)",
+  date_until: "string (dd-mm-yyyy:hh:mm)",
+  repeat: "enum (daily, weekly, monthly, never)", # std: never
+  place: "string" # optional
+}
+
+Return: CREATED, BAD_REQUEST
+
+#Req-Body PUT /meeting URI Params : Optional
+  title: "string",
+  description: "string", # optional
+  links: "string", # optional
+  date_from: "string (dd-mm-yyyy:hh:mm)",
+  date_until: "string (dd-mm-yyyy:hh:mm)",
+  repeat: "enum (daily, weekly, monthly, never)", # std: never
+  place: "string"
+
+Return: OK, BAD_REQUEST, NOT_FOUND
+
+#GET /meeting URI Param: Optional
+meeting-id
+return: NOT_FOUND, JSON
+JSON: 
+  {
+    title: "string",
+    description: "string", # optional
+    links: "string", # optional
+    date_from: "string (dd-mm-yyyy:hh:mm)",
+    date_until: "string (dd-mm-yyyy:hh:mm)",
+    repeat: "enum (daily, weekly, monthly, never)", # std: never
+    place: "string" # optional
+  }
+
+Meeting-Entity: 
+  Long id,
+  String title,
+  String description,
+  String links,
+  LocalDate date_from,
+  LocalDate date_until,
+  Repeatable(enum) repeat,
+  String place,
+  Optionial<List<UserEntity>> users
diff --git a/docker-compose.yml b/docker-compose.yml
index 87c9642..49d3d46 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   postgres-db:
     image: postgres:latest
@@ -10,3 +8,9 @@ services:
       POSTGRES_DB: studbud
     ports:
       - "5432:5432"
+  
+  backend:
+    image: panderu/study-buddies-backend:latest
+    container_name: backend
+    ports: 
+      - "8080:8080"
diff --git a/server/application.properties b/server/application.properties
new file mode 100644
index 0000000..9311e6a
--- /dev/null
+++ b/server/application.properties
@@ -0,0 +1,8 @@
+spring.jpa.show-sql=true
+
+spring.datasource.url=jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
+spring.datasource.driver-class-name=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.h2.console.enabled=true
+spring.jpa.hibernate.ddl-auto=create-drop
diff --git a/server/pom.xml b/server/pom.xml
index aeca303..b1f7b37 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -55,12 +55,6 @@
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
 
-		<!-- PostgreSQL driver for database interaction -->
-		<dependency>
-			<groupId>org.postgresql</groupId>
-			<artifactId>postgresql</artifactId>
-			<scope>runtime</scope> <!-- Loaded only during runtime, not compile time -->
-		</dependency>
 
 		<!-- Lombok for reducing boilerplate code (e.g., getters, setters) -->
 		<dependency>
@@ -77,6 +71,14 @@
 			<scope>test</scope> <!-- Only used in testing phase -->
 		</dependency>
 
+
+		<!-- H2 (in memory) DB -->
+    <dependency>
+      <groupId>com.h2database</groupId>
+      <artifactId>h2</artifactId>
+      <scope>runtime</scope>
+    </dependency>
+
 		<!-- MapStruct for mapping Java objects (DTOs to entities, etc.) -->
 		<dependency>
 			<groupId>org.mapstruct</groupId>
@@ -90,6 +92,13 @@
 			<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
 			<version>2.5.0</version>
 		</dependency>
+
+		<!-- Bouncycastle for their Argon2 hashing implementation -->
+    <dependency>
+    	<groupId>org.bouncycastle</groupId>
+    	<artifactId>bcpkix-jdk18on</artifactId>
+    	<version>1.78.1</version>
+		</dependency>
 	</dependencies>
 
 	<!-- Build section: Contains build-specific information such as plugins -->