Fresh Installation - Path /var/www/html/sk is not writable!

[CHS-SUEDWERK]

Hello, I have a fresh installation of teampass over the docker compose yml file
https://github.com/nilsteampassnet/TeamPass/blob/master/docker/docker-compose/docker-compose.yml

I installed the latest version.
After publishing the docker container i get to the install.php
When setting the absolute path to secure path to "/var/www/html/sk" i get the error message "Path /var/www/html/sk is not writable!"
This is very frustrating.

Here is my docker compose yml

version: "3.8"

services:
teampass:
image: teampass/teampass:latest
container_name: teampass-app
restart: unless-stopped

environment:
  # Database configuration
  DB_HOST: db
  DB_PORT: 3306
  DB_NAME: ${DB_NAME}
  DB_USER: ${DB_USER}
  DB_PASSWORD: ${DB_PASSWORD}
  DB_PREFIX: ${DB_PREFIX}

  # Installation mode
  INSTALL_MODE: ${INSTALL_MODE}
  ADMIN_EMAIL: ${ADMIN_EMAIL}
  ADMIN_PWD: ${ADMIN_PWD}
  TEAMPASS_URL: ${TEAMPASS_URL}

  # PHP configuration
  PHP_MEMORY_LIMIT: ${PHP_MEMORY_LIMIT}
  PHP_UPLOAD_MAX_FILESIZE: ${PHP_UPLOAD_MAX_FILESIZE}
  PHP_MAX_EXECUTION_TIME: ${PHP_MAX_EXECUTION_TIME}

volumes:
  # Persistent data
  - teampass-sk:/var/www/html/sk
  - teampass-files:/var/www/html/files
  - teampass-upload:/var/www/html/upload

ports:
  - "${TEAMPASS_PORT}:80"

networks:
  - teampass-network

depends_on:
  db:
    condition: service_healthy

healthcheck:
  test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost/health"]
  interval: 30s
  timeout: 10s
  retries: 3
  start_period: 60s

labels:
  - "com.teampass.description=TeamPass Application"
  - "com.teampass.version=${TEAMPASS_VERSION}"

db:
image: mariadb:${MARIADB_VERSION:-11.2}
container_name: teampass-db
restart: unless-stopped

environment:
  MARIADB_ROOT_PASSWORD: ${MARIADB_ROOT_PASSWORD}
  MARIADB_DATABASE: ${DB_NAME}
  MARIADB_USER: ${DB_USER}
  MARIADB_PASSWORD: ${DB_PASSWORD}
  MARIADB_AUTO_UPGRADE: "1"
  MARIADB_INITDB_SKIP_TZINFO: "1"

volumes:
  - teampass-db:/var/lib/mysql
  - ../../docker/mariadb/custom.cnf:/etc/mysql/conf.d/custom.cnf:ro

networks:
  - teampass-network

healthcheck:
  test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
  interval: 10s
  timeout: 5s
  retries: 5
  start_period: 30s

command:
  - --character-set-server=utf8mb4
  - --collation-server=utf8mb4_unicode_ci
  - --max_allowed_packet=64M
  - --innodb_buffer_pool_size=256M

labels:
  - "com.teampass.description=TeamPass Database"

networks:
teampass-network:
driver: bridge
labels:
- "com.teampass.network=main"

volumes:
teampass-sk:
driver: local
labels:
- "com.teampass.volume=saltkey"

teampass-files:
driver: local
labels:
- "com.teampass.volume=files"

teampass-upload:
driver: local
labels:
- "com.teampass.volume=upload"

teampass-db:
driver: local
labels:
- "com.teampass.volume=database"

[PiWebswiss]

You can run docker exec teampass-app chown -R www-data:www-data /var/www/html.
It’s a bit of a “bazooka” solution, and you might run into other problems afterward.

In my case, I now get stuck at this error:

“Database connection failed with error: Unable to connect to MySQL server! Error: MySQL server has gone away.”

This is where I’m at right now. If anyone has a solution, I’m open to suggestions.