diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..e2a23cf
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,7 @@
+.env
+.env.*
+.git
+.gitignore
+node_modules
+.next
+*.md
diff --git a/Dockerfile b/Dockerfile
index 477e1e4..7274fe3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,9 @@ COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
 ARG BUILD_DATE
+ARG NEXT_PUBLIC_FAHRKOSTEN_SATZ=15
 ENV NEXT_PUBLIC_BUILD_DATE=${BUILD_DATE}
+ENV NEXT_PUBLIC_FAHRKOSTEN_SATZ=${NEXT_PUBLIC_FAHRKOSTEN_SATZ}
 ENV NEXT_TELEMETRY_DISABLED=1
 
 RUN npm run build
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 3f4bf14..d8b3503 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -47,11 +47,13 @@ services:
       DB_PASS: ${DB_PASS}
       DB_NAME: ${DB_NAME}
       AUTH_SECRET: ${AUTH_SECRET}
+      DEFAULT_PASSWORD: ${DEFAULT_PASSWORD}
+      NEXT_PUBLIC_FAHRKOSTEN_SATZ: ${NEXT_PUBLIC_FAHRKOSTEN_SATZ:-15}
       NODE_ENV: production
-      BACKUP_SSH_URL: ${BACKUP_SSH_URL}
+      BACKUP_SSH_URL: ${BACKUP_SSH_URL:-}
       BACKUP_SSH_KEY_PATH: /run/secrets/backup_ssh_key
     volumes:
-      - ${BACKUP_SSH_KEY_FILE}:/run/secrets/backup_ssh_key:ro
+      - ${BACKUP_SSH_KEY_FILE:-/dev/null}:/run/secrets/backup_ssh_key:ro
     ports:
       - "127.0.0.1:${APP_PORT:-3000}:3000"
     depends_on: