{"id":12706,"date":"2026-11-06T11:46:15","date_gmt":"2026-11-06T06:16:15","guid":{"rendered":"https:\/\/pheonixsolutions.com\/blog\/?p=12706"},"modified":"2026-11-06T11:47:17","modified_gmt":"2026-11-06T06:17:17","slug":"docker-networking-between-containers","status":"publish","type":"post","link":"https:\/\/pheonixsolutions.com\/blog\/docker-networking-between-containers\/","title":{"rendered":"How to Configure Docker Networking Between Containers"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Post Date<\/strong>: November 06, 2026<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Introduction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Docker Networking Between Containers allows multiple Docker containers to communicate with each other through an isolated network. It is useful when running applications such as web servers, backend services, and databases in separate containers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this tutorial, we will create a custom Docker bridge network, connect two containers, and verify communication between them using simple commands.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Prerequisites<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ubuntu 22.04 \/ 24.04 server.<\/li>\n\n\n\n<li>Minimum 2 GB RAM.<\/li>\n\n\n\n<li>2 CPU cores.<\/li>\n\n\n\n<li>Root or sudo access.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Implementation<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Install Docker<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Update the package repository and install Docker.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo apt update\nsudo apt install docker.io -y<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Start and enable Docker.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl enable --now docker<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Verify Docker installation.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>docker --version<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image.png\"><img decoding=\"async\" width=\"682\" height=\"51\" src=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image.png\" alt=\"\" class=\"wp-image-12827\" srcset=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image.png 682w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image-300x22.png 300w\" sizes=\"(max-width: 682px) 100vw, 682px\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2. Check Docker Networks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">List the existing Docker networks.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker network ls<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Docker provides default networks such as bridge, host, and none.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-19.png\"><img fetchpriority=\"high\" decoding=\"async\" width=\"635\" height=\"105\" src=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-19.png\" alt=\"\" class=\"wp-image-12708\" srcset=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-19.png 635w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-19-300x50.png 300w\" sizes=\"(max-width: 635px) 100vw, 635px\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3. Create a Custom Bridge Network<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Create a custom network named <code>my-network<\/code>.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker network create --driver bridge my-network<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Verify the network.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker network ls<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-20.png\"><img decoding=\"async\" width=\"602\" height=\"120\" src=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-20.png\" alt=\"\" class=\"wp-image-12709\" srcset=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-20.png 602w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-20-300x60.png 300w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">4. Create the First Container<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Create an Nginx container named <code>web-server<\/code> and connect it to the custom network<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker run -d \\\n--name web-server \\\n--network my-network \\\nnginx<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. Create the Second Container<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Create another Nginx container named <code>app-server<\/code> and connect it to the same network<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker run -d \\\n--name app-server \\\n--network my-network \\\nnginx<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Check both containers.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker ps<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-24.png\"><img loading=\"lazy\" decoding=\"async\" width=\"937\" height=\"75\" src=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-24.png\" alt=\"\" class=\"wp-image-12714\" srcset=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-24.png 937w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-24-300x24.png 300w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-24-768x61.png 768w\" sizes=\"(max-width: 937px) 100vw, 937px\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">6. Verify Container Communication<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Execute the following command to test communication from <code>web-server<\/code> to <code>app-server<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker exec web-server curl http:\/\/app-server<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Expected output:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-22.png\"><img loading=\"lazy\" decoding=\"async\" width=\"902\" height=\"627\" src=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-22.png\" alt=\"\" class=\"wp-image-12711\" style=\"aspect-ratio:1.4386332983665517;width:496px;height:auto\" srcset=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-22.png 902w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-22-300x209.png 300w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/10\/image-22-768x534.png 768w\" sizes=\"(max-width: 902px) 100vw, 902px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">If you receive the Nginx welcome page, communication between the containers is successful.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. Verify Network Configuration<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Inspect the custom Docker network. Verify that both <code>web-server<\/code> and <code>app-server<\/code> appear under the connected containers.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker network inspect my-network<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"745\" height=\"627\" src=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image-1.png\" alt=\"\" class=\"wp-image-12962\" srcset=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image-1.png 745w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2026\/11\/image-1-300x252.png 300w\" sizes=\"(max-width: 745px) 100vw, 745px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In this tutorial, we learned how to configure Docker networking between containers using a custom bridge network. We created two Nginx containers, connected them to the same network, and verified communication using container names.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Custom bridge networking helps containers communicate securely and makes it easier to manage multi-container applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At <a href=\"https:\/\/pheonixsolutions.com\/devops-cloud\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Pheonix Solutions<\/strong><\/a>, we share hands-on Docker and DevOps guides to help developers and system administrators learn container management, configure container networks, and enable seamless communication between Docker containers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. What is Docker networking?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Docker networking allows multiple containers to communicate with each other and external networks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. What is a Docker bridge network?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A bridge network is a default Docker networking driver that allows containers on the same network to communicate with each other.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. How do I create a custom Docker network?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use the following command:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>docker network create --driver bridge my-network<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Related Articles<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/how-to-save-docker-images-as-a-tar-file\/\">How to Save Docker Images as a TAR File<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pheonixsolutions.com\/blog\/docker-container-to-image\/\">How to Convert a Docker Container to Image<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Need Help with Docker Networking and Container Management?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Need help with Docker network configuration, container-to-container communication, Docker troubleshooting, or managing containerised applications? Our experts can assist with Docker installation, network configuration, container management, DevOps automation, and other infrastructure requirements. Get in touch with our team <a href=\"https:\/\/pheonixsolutions.com\/contact?utm_source=chatgpt.com\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Post Date: November 06, 2026 Introduction Docker Networking Between Containers allows multiple Docker containers to communicate with each other through 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