feat: Initial Matrix server setup with Postgres, Element, and Keycloak OIDC

docker-compose.yml

@@ -0,0 +1,49 @@
+services:
+  synapse:
+    image: matrixdotorg/synapse:latest
+    container_name: matrix_synapse
+    restart: unless-stopped
+    ports:
+      - "${SYNAPSE_PORT:-8008}:8008"
+    volumes:
+      - ./data:/data
+    environment:
+      - SYNAPSE_CONFIG_PATH=/data/homeserver.yaml
+      - UID=1000
+      - GID=1000
+      - TZ=Europe/Berlin
+    depends_on:
+      - synapse_db
+    networks:
+      - default
+      - npm-net
+
+  synapse_db:
+    image: postgres:16-alpine
+    container_name: matrix_synapse_db
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-synapse}
+      POSTGRES_USER: ${POSTGRES_USER:-synapse}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      PGDATA: /var/lib/postgresql/data/pgdata
+    volumes:
+      - ./postgres_data:/var/lib/postgresql/data
+    networks:
+      - default
+
+  element:
+    image: vectorim/element-web:latest
+    container_name: matrix_element
+    restart: unless-stopped
+    ports:
+      - "${ELEMENT_PORT:-8088}:80"
+    volumes:
+      - ./element-config.json:/app/config.json
+    networks:
+      - default
+      - npm-net
+
+networks:
+  npm-net:
+    external: true