how do I launch multiple startup tasks at a build time docker? - docker

Question

I am trying to launch multiples startup scripts where it automates my ci/cd tasks, but however, I am just getting the response of the entry point.sh, how can I force to execute other scripts?
entrypoint.sh
#!/bin/sh
IFS=$',\n' ## set IFS to break on comma or newline
for host in $HOSTS; do
## mkdir -p "letsencrypt/live/${host}/fullchain.pem"
echo "mkdir -p letsencrypt/live/${host}/fullchain.pem"
done
init-letsencrypt.sh
#!/bin/sh
echo "cool"
xxxxx:~/xx$ docker-compose logs nginx
Attaching to platform_nginx_1
nginx_1 | mkdir -p letsencrypt/live/domain.io/fullchain.pem
nginx_1 | mkdir -p letsencrypt/live/www.domain.io/fullchain.pem
nginx_1 | mkdir -p letsencrypt/live/api.domain.io/fullchain.pem
nginx_1 | mkdir -p letsencrypt/live/app.domain.io/fullchain.pem
FROM nginx:1.19.0-alpine
# Install certbot for letsencrypt certificates
RUN apk add --no-cache certbot
COPY . /etc/nginx/
# Directory needed for LetEncrypt certificates renewal
RUN mkdir /var/lib/certbot
# Add scripts and auto-renewal scripts
COPY ./bin/entrypoint.sh /entrypoint.sh
COPY ./bin/init-letsencrypt.sh /init-letsencrypt.sh
# Make them executable
RUN chmod +x /entrypoint.sh
RUN chmod +x /init-letsencrypt.sh
# Install certificates and launch
ENTRYPOINT /entrypoint.sh

Answer 1

To run something at build time, you should use RUN.
CMD and ENTRYPOINT are used to launch the main process of your container. A container is "just" a process that is encapsulated in namespaces, basically. A container runs until this process stops or dies. When you specify you entrypoint.sh as an entrypoint, you are saying that the main process of you container is this script. To say it differently : the only goal of this container is to execute this script then die
You should useRUN to launch both of your scripts, then CMD or ENTRYPOINT to launch your nginx (most probably ENTRYPOINT, you wilk get why if you read the docs ;))