chore: use docker init system for running wakapi to fight zombies (resolve #713) [skip ci]

README.md

@@ -79,6 +79,7 @@ $ SALT="$(cat /dev/urandom | LC_ALL=C tr -dc 'a-zA-Z0-9' | fold -w ${1:-32} | he
 
 # Run the container
 $ docker run -d \
+  --init \
   -p 3000:3000 \
   -e "WAKAPI_PASSWORD_SALT=$SALT" \
   -v wakapi-data:/data \

compose.yml

@@ -1,6 +1,7 @@
 services:
   wakapi:
     build: .
+    init: true
     ports:
       - 3000:3000
     restart: unless-stopped