🎯 Objective
Quick reference for:
Image tagging
Image creation & deletion
Network creation & deletion
Running containers with volume & port mapping
# 🏷️ Docker Tag (Image Re-tagging)
🧠 Concept
Create a new tag for an existing image (no duplication)
⚙️ Command
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docker tag <source_image>:<tag> <target_image>:<tag>📌 Example
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docker tag app:latest app:custom# 📦 Docker Image Creation
🧠 Concept
Create image from a container snapshot
⚙️ Command
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docker commit <container_name> <image_name>:<tag># 🗑️ Docker Image Deletion
⚙️ Command
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docker rmi <image_name>:<tag>⚠️ If in use
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docker rm -f <container_name>
docker rmi <image_name>:<tag># 🌐 Docker Network Creation
🧠 Concept
Custom network for container communication
⚙️ Command
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docker network create \
--driver bridge \
--subnet <subnet> \
--gateway <gateway> \
<network_name># 🗑️ Docker Network Deletion
⚙️ Command
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docker network rm <network_name>⚠️ If in use
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docker network disconnect <network_name> <container_name>
docker network rm <network_name># 🚀 Run Container (Volume + Port Mapping)
🧠 Concept
v → host ↔ container file sync
p → expose container service
⚙️ Command
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docker run-d \
--name <container_name> \
-p <host_port>:<container_port> \
-v <host_path>:<container_path> \
<image_name>:<tag>🔍 Verify
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docker ps
docker inspect <container_name> | grep -A 10 Mounts
docker port <container_name>
curl http://localhost:<host_port>/# 🧪 Validation Checklist
[ ] Image tagged correctly
[ ] Image created from container
[ ] Image deleted successfully
[ ] Network created with correct subnet
[ ] Network deleted properly
[ ] Container running with correct port mapping
[ ] Volume mapping working
[ ] Service accessible via curl