This repository demonstrates various use cases for Docker, including running a web server, creating a database, building custom Docker images, and using Docker Compose for managing services.

Ensure you have the following installed:

• Docker
• Docker Compose

Run an Nginx web server on port 8080 using Docker:

• bash

  • $ docker run -d -p 8080:80 nginx
  • Access the server at http://localhost:8080.

3. Creating a Custom Database Set up a PostgreSQL database with custom configurations:

• $ docker run --name database -p 5435:5432 -e POSTGRES_USER=dsa -e POSTGRES_PASSWORD=dsa1010 -e POSTGRES_DB=dsadb -d postgres:16.0

Parameters:

• POSTGRES_USER: Sets the database username (dsa).
• POSTGRES_PASSWORD: Sets the database password (dsa1010).
• POSTGRES_DB: Creates a database named dsadb. Access the database at localhost:5435.

5. Building a Custom Docker Image 4.1. Create a Dockerfile Create a file named Dockerfile with the following content: >

4.2. Create a Python Script and save the file named testedsa.py with the following content: print("Olá, Bem-Vindo(a) ao Docker com a DSA!")

4.3. Build the Docker Image Run the following command to build the image: $ docker build -t dsa-image .

• Output:

5. Using Docker Compose 5.1. Create a Docker Compose File Create a file named docker-compose.yml with the following content:

5.2. Run Docker Compose Commands

• Start the services:
  • $ docker-compose up -d
• Stop and remove the services:
  • $ docker-compose down
• Access the services at:
  • http://localhost:8080 for web1
  • http://localhost:8081 for web2