Building local docker image

[textgroove-steven]

I am trying to build a local docker image to use shlink and work on adding a new database. When I run the build command:

docker build -t localenv/shlink .

It builds everything correctly:

[+] Building 0.8s (19/19) FINISHED
 => [internal] load .dockerignore
 => => transferring context: 419B
 => [internal] load build definition from Dockerfile
 => => transferring dockerfile: 3.71kB
 => [internal] load metadata for docker.io/library/composer:2
 => [internal] load metadata for docker.io/library/php:8.2-alpine3.17
 => [internal] load build context
 => => transferring context: 33.20kB
 => [base 1/4] FROM docker.io/library/php:8.2-alpine3.17@sha256:1119d91b31c3e306cbcfd4c2c5f42dfb9abbae87043536b63183ce56567aff2c
 => FROM docker.io/library/composer:2@sha256:7c03aa544494973299998db9e51f3c4ca880f2d51475b78a4bca4214a8a4fe82
 => CACHED [base 2/4] WORKDIR /etc/shlink
 => CACHED [base 3/4] RUN     apk add --no-cache --virtual .dev-deps sqlite-dev postgresql-dev icu-dev libzip-dev zlib-dev libpng-dev linux-headers &&     docker-php-ext-install -j"$(nproc)" pdo_mysql p
 => CACHED [base 4/4] RUN apk add --no-cache --virtual .phpize-deps autoconf   dpkg-dev dpkg   file   g++   gcc   libc-dev   make   pkgconf   re2c unixodbc-dev &&     if [ "rr" == 'openswoole' ]; then
 => CACHED [builder 1/3] COPY . .
 => CACHED [builder 2/3] COPY --from=composer:2 /usr/bin/composer ./composer.phar
 => CACHED [builder 3/3] RUN apk add --no-cache git &&     php composer.phar install --no-dev --prefer-dist --optimize-autoloader --no-progress --no-interaction --ignore-platform-req=ext-openswoole &&
 => CACHED [stage-2 1/5] COPY --from=builder --chown=root /etc/shlink .
 => CACHED [stage-2 2/5] RUN ln -s /etc/shlink/bin/cli /usr/local/bin/shlink &&     if [ "rr" == 'rr' ]; then       php ./vendor/bin/rr get --no-interaction --no-config --location bin/ && chmod +x bin/r
 => CACHED [stage-2 3/5] COPY docker/docker-entrypoint.sh docker-entrypoint.sh
 => CACHED [stage-2 4/5] COPY docker/config/shlink_in_docker.local.php config/autoload/shlink_in_docker.local.php
 => CACHED [stage-2 5/5] COPY docker/config/php.ini /usr/local/etc/php/conf.d/
 => exporting to image
 => => exporting layers
 => => writing image sha256:950bdac5d5682c31dcf628c4b87a481791177d1cfec535f7630f8374e7c1419a
 => => naming to docker.io/localenv/shlink

However, when I go to run it inside of docker, it gives me an error on entrypoint.sh file:

./docker-entrypoint.sh: set: line 2: illegal option -

Any ideas what I am doing wrong here?