When running the latest permitio/opal-client:0.7.12 image as docker compose with following command

sh -c "exec ./wait-for.sh http://opal-server:7002/healthcheck --timeout=60 -- ./start.sh"

the ./start.sh script is never executed. The reason is that wget binary does not exists therefor

wget --timeout=1 -q "$HOST" -O /dev/null > /dev/null 2>&1

returns 127 exit code.