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Docker Base Images

MySql Base Image, Custom Image

PHP Image

PHP Docker Images

Dockerfile Examples

Dockerfile (run,env,label,WORKDIR)

Docker diff command

Docker Export, Import and .tar file

Docker save/docker load

Running Docker Containers from docker images

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MySql

Starting Your MySQL Container

  docker run --name mysql -d \
      -p 3306:3306 \
      -e MYSQL_ROOT_PASSWORD=change-me \
      --restart unless-stopped \
      mysql:8

You can do this at any time by using docker exec to get a shell inside the container:

  docker exec -it mysql mysql -p

Persisting Data With Volumes

Stop and remove your earlier container to avoid naming conflicts:

  docker stop mysql
  docker rm mysql

Then start a new container with the revised configuration:

    docker run --name mysql -d \
      -p 3306:3306 \
      -e MYSQL_ROOT_PASSWORD=change-me \
      -v mysql:/var/lib/mysql \
      mysql:8



     docker stop mysql
     docker rm mysql

Using Container Networks

First create a Docker network for your application:

  docker network create example-app

Specify this network when starting your MySQL container:

  docker run --name mysql -d \
      -e MYSQL_ROOT_PASSWORD=change-me \
      -v mysql:/var/lib/mysql \
      --network example-app \
      mysql:8

Connect another container to the same network:

  docker run --name api-server -d \
      -p 80:80 \
      --network example-app \
      example-api-server:latest

MySQL Configuration:

  -e
     MYSQL_DATABASE
     MYSQL_USER and MYSQL_PASSWORD
     MYSQL_RANDOM_ROOT_PASSWORD
     MYSQL_ROOT_PASSWORD
     MYSQL_ALLOW_EMPTY_PASSWORD
     MYSQL_ROOT_PASSWORD_FILE

Docker secrets or volumes to inject values as files.

  mkdir secrets
  echo "P@$$w0rd" > secrets/mysql-root-password

  docker run --name mysql -d \
      -p 3306:3306 \
      -e MYSQL_ROOT_PASSWORD_FILE=/run/secrets/mysql-root-password \
      -v ./secrets:/run/secrets \
      --restart unless-stopped \
      mysql:8

Creating a Custom Image

Here’s an example my.cnf that changes some MySQL settings:

  my.cnf[mysqld]
  innodb-ft-enable-stopword = 0
  innodb-ft-min-token-size = 1

Dockerfile

  FROM mysql:8
  COPY my.cnf /etc/mysql/conf.d/my.cnf

Build your image:

  docker build -t custom-mysql:latest .

Now you can run your image to start a MySQL instance that automatically uses your config file:

  docker run --name custom-mysql -d \
      -p 3306:3306 \
      -e MYSQL_ROOT_PASSWORD=change-me \
      -v mysql:/var/lib/mysql \
      custom-mysql:latest

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For PHP Frameworks Dockrfile

Dockerfile:

  FROM php:8.1.4-fpm

  RUN apt-get update && apt-get install -y \
      git \
      curl \
      zip \
      unzip

  RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer \
      chown -R www-data:www-data /var/www #It may be added
  WORKDIR /var/www

FROM php:7.2-alpine3.8

RUN apk update
RUN apk add bash
RUN apk add curl

# INSTALL COMPOSER
RUN curl -s https://getcomposer.org/installer | php
RUN alias composer='php composer.phar'

# INSTALL NGINX
RUN apk add nginx



FROM php:8.0.2-apache
RUN apt-get update && apt-get upgrade -y
RUN apt-get install -y mariadb-client libxml2-dev
RUN apt-get autoremove -y && apt-get autoclean
RUN docker-php-ext-install mysqli pdo pdo_mysql xml
COPY --from=composer /usr/bin/composer /usr/bin/composer

FROM php:7.3-fpm-alpine
RUN docker-php-ext-install pdo pdo_mysql
RUN docker-php-ext-install mysqli && docker-php-ext-enable mysqli

RUN php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer
RUN apk update
RUN apk upgrade
RUN apk add bash
RUN alias composer='php /usr/bin/composer'

How to install PHP composer inside a docker container:

FROM php:7.1.3-fpm

RUN apt-get update && apt-get install -y libmcrypt-dev
mysql-client libmagickwand-dev --no-install-recommends
&& pecl install imagick
&& docker-php-ext-enable imagick
&& docker-php-ext-install mcrypt pdo_mysql && chmod -R o+rw laravel-master/bootstrap laravel-master/storage

I try to work out a way to create a dev environment using docker and laravel.

I have the following dockerfile:

  FROM php:7.1.3-fpm

  RUN apt-get update && apt-get install -y libmcrypt-dev \
      mysql-client libmagickwand-dev --no-install-recommends \
      && pecl install imagick \
      && docker-php-ext-enable imagick \
  && docker-php-ext-install mcrypt pdo_mysql
  && chmod -R o+rw laravel-master/bootstrap laravel-master/storage

Laravel requires composer to call composer dump-autoload when working with database migration. Therefore, I need composer inside the docker container. I tried:

  RUN curl -sS https://getcomposer.org/installer | php -- \
  --install-dir=/usr/bin --filename=composer

But when I call

  docker-compose up
  docker-compose exec app composer dump-autoload

In Dockerfile :

  COPY --from=composer:latest /usr/bin/composer /usr/local/bin/composer

 # Install Composer

  RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer


  FROM php:7.1.3-fpm

  RUN apt-get update && apt-get install -y libmcrypt-dev \
      mysql-client libmagickwand-dev --no-install-recommends \
      && pecl install imagick \
      && docker-php-ext-enable imagick \
  && docker-php-ext-install mcrypt pdo_mysql





 # Install Composer

  RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

It works for me, to test if the composer are installed i access to my container bash and execute:

  composer --version
  Composer version 1.6.5 2018-05-04 11:44:59

Dockerfile:

  #Get Composer
  FROM composer:2.0 as vendor

  WORKDIR /app

  COPY database/ database/
  COPY composer.json composer.json
  COPY composer.lock composer.lock

  RUN composer install \
      --no-interaction \
      --no-plugins \
      --no-scripts \
      --no-dev \
      --prefer-dist

  COPY . .
  RUN composer dump-autoload

Create an executable of your composer file using

  RUN curl -sS https://getcomposer.org/installer | php -- \
  --install-dir=/usr/bin --filename=composer && chmod +x /usr/bin/composer

We have basicly the same command running with the difference,

   --install-dir=/usr/local/bin

Alternatively, you should add the composer bin files path to the $PATH variable.

   export PATH=$PATH":/usr/bin"

Another way:

Dockerfile:

    RUN php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer




    FROM php:7.3-fpm-alpine
    RUN docker-php-ext-install pdo pdo_mysql
    RUN docker-php-ext-install mysqli && docker-php-ext-enable mysqli

    RUN php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer
    RUN apk update
    RUN apk upgrade
    RUN apk add bash
    RUN alias composer='php /usr/bin/composer'

How to install PHP composer inside a docker container?

I'm trying to figure out how to set up a development environment with Docker and Laravel.

The following is my Dockerfile:

    FROM php:7.1.3-fpm

    RUN apt-get update && apt-get install -y libmcrypt-dev \
        mysql-client libmagickwand-dev --no-install-recommends \
        && pecl install imagick \
        && docker-php-ext-enable imagick \
    && docker-php-ext-install mcrypt pdo_mysql
    && chmod -R o+rw laravel-master/bootstrap laravel-master/storage

When working with database migration, Laravel requires composer to perform composer dump-autoload. As a result, composer is required inside the Docker container.

I tried this but:

    RUN curl -sS https://getcomposer.org/installer | php -- \
    --install-dir=/usr/bin --filename=composer

Later, when I call it

    docker-compose up
    docker-compose exec app composer dump-autoload

The following error is thrown:

rpc error: code = 13 desc = invalid header field value "oci runtime error: exec failed: container_linux.go:247: starting container process caused "exec: \"composer\": executable file not found in $PATH"\n"

I'd be grateful for any advise on how to add composer to the PATH in my dockerfile or what else I can do to get around this mistake.

FROM php:7-fpm
WORKDIR /var/www
RUN apt-get update && apt-get install -y libmcrypt-dev mysql-client && docker-php-ext-install mcrypt pdo_mysql
ADD . /var/www
RUN chown -R www-data:www-data /var/www

FROM php:fpm

# Arguments defined in docker-compose.yml
ARG user
ARG uid

# Install system dependencies
RUN apt-get update && apt-get install -y libmcrypt-dev mysql-client

# Install PHP extensions
RUN docker-php-ext-install mcrypt pdo_mysql

# Get latest Composer
COPY --from=composer:latest /usr/bin/composer /usr/bin/composer

# Create system user to run Composer and Artisan Commands
RUN useradd -G www-data,root -u $uid -d /home/$user $user
RUN mkdir -p /home/$user/.composer && \
    chown -R $user:$user /home/$user

# Set working directory
WORKDIR /var/www

# Set the user
USER $user

# Copy your files
COPY . . # You can use "." as a destination since you already changed the workdir

Dockeerfile env, run, label and Workdir

Dockerfile:

FROM ubuntu:latest
LABEL name="ajaysisaudiya"
LABEL email="sample@gmail.com"
ENV NAME ajaysisaudiya
ENV PASS password

CMDS:

docker build . -t myimage:1

docker run myimage:1 -it bash

roote@abcd3838# env

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Docker diff

docker run --name server -p 8000:80 -d nginx:latest
docker exec -it <containerId> /bin/bash

<containerId># touch /tmp/ajay.html 

docker diff <containerId>
watch docker diff <containerId>

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Docker export, immport and .tar file

docker exec -it <containerId> /bin/bash

<containerId># apt-get update
<containerId># apt install git tree
 docker export <containerId> > my_ubuntu.tar
 docker export <containerId> -o my_ubuntu2.tar
 
docker image import my_ubuntu.tar my_ubuntu_img
ls -lh
docker run -it my_ubuntu_img /bin/bash

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Docker save / docker load

docker images
docker image save -o <originalImgName> <tarFilename>.tar
OR
docker image save -o <originalImgName> <tarFilename>.tar

docker image save -o php myphp.tar
OR
docker image save php > myphp.tar
 
ls

docker image history logstash
docker image rm logstash

ls

docker load -i  <existedTarfileName.tar>
OR
docker load < <existedTarfileName.tar>

docker load -i myphp.tar
OR
docker load < myphp.tar

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Docker Commands

Docker Import & Export

docker export -o [ContainerID] [tarfilename.tar]
docker image import [tarfilename.tar] [newimagename] 
docker images

Docker save & load

docker save <imageNameWithVersion> -o <tarfileName.tar>
docker load -i <tarfileName.tar>

Docker Network

docker network create <networkName>
docker network rm <networkName>
docker network ls
docker network inspect <networkName>
docker network connect <networkName> <containerIdorName>
docker service create --network frontend --network backend 
docker network create --driver=bridge network1 --subnet=172.19.0.0/24
docker network create --driver=bridge network2 --subnet=172.19.1.0/24

Not Defining subnet & gateway (Default Gateway IP):

 docker network create my-network

Defining subnet & gateway (Set Gateway IP):

 docker network create --subnet 10.7.0.0/16 --gateway 10.7.7.7 my-network

Docker Volume

docker volume create <volumeName>
docker volume rm <volumeName>
docker volume ls
docker volume inspect <volumeName>

Uses:

Choose the -v or --mount flag

   --mount 'type=volume,src=<VOLUME-NAME>,dst=<CONTAINER-PATH>

In a Container:

   -v <sourcePath>:<targetPath>
   -v "$PWD"/src:/usr/share/nginx/html
   
   -v /<source>:<target>
   -v /src:/usr/share/nginx/html

In Compose File:

   volumes:
  - myapp:/home/node/app


   volumes:
    myapp:
      external: true

Docker Commands

docker run --name db --network mynetwork -p 8000:80 -d nginx
docker run --name myserver --network mynetwork --link mydb  -p 8000:80 -v "$PWD"/src:/var/www/html -d server01

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