Install cURL compiled with OpenSSL and zlib in Dockerfile - php

Question

I need to install cURL compiled with OpenSSL and zlib via Dockerfile for Debian image with apache and php 5.6. I tried many approaches but due to the fact that I don't have string understanding in Linux a failed. I use docker-compose to up my container. docker-compose.yaml looks like:
version: '2'
services:
web:
build: .
command: php -S 0.0.0.0:80 -t /var/www/html/
ports:
- "80:80"
depends_on:
- db
volumes:
- $PWD/www/project:/var/www/html
container_name: "project-web-server"
db:
image: mysql:latest
ports:
- "192.168.99.100:3306:3306"
container_name: "project-db"
environment:
MYSQL_DATABASE: dbname
MYSQL_USER: dbuser
MYSQL_PASSWORD: dbpass
MYSQL_ROOT_PASSWORD: dbpass
As a build script I use Dockerfile:
FROM php:5-fpm
RUN apt-get update && apt-get install -y \
apt-utils \
curl libcurl3 libcurl3-dev php5-curl php5-mcrypt
RUN docker-php-ext-install -j$(nproc) curl
'docker-php-ext-install' is a helper script from the base image https://hub.docker.com/_/php/
The problem is that after $ docker build --rm . which is successful a don't get an image with cURL+SSL+zlib. After $ docker-compose up I have a working container with Apache+MySQL and can run my project but libraries I need are not there.
Could you explain how to add these extensions to my apache in container properly? I even tried to create my own Dockerfile and build apache+php+needed libs there, but had no result.

Answer 1

Your Dockerfile is not complete. You have not done a COPY (or similar) to transfer your source code to execute from the host into the container. The point of a Dockerfile is to setup an environment together with your source code which finishes by launching a process (typically a server).
COPY code-from-some-location into-location-in-container
CMD path-to-your-server
... as per the URL you reference a more complete Dockerfile would appear like this
FROM php:5.6-cli
COPY . /usr/src/myapp
WORKDIR /usr/src/myapp
CMD [ "php", "./your-script.php" ]
notice the COPY which recursively copies all files/dirs (typically the location of your source code, etc like data and/or config files) in your $PWD where you execute the command onto the specified location internal to the container In unix a period as in . indicates the current directory so above command
COPY . /usr/src/myapp
will copy all files and directories in current directory from the host computer (the one you are using when typing in the docker build command) into the container directory called /usr/src/myapp
the WORKDIR acts to change directories into your container's dir supplied
finally the CMD launches the server which hums along once your launch the container