Tweaks

README.md

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+## Uvod
+
+- Docker je platforma za development, delivery i izvršavanje aplikacija
+- Docker omogućava da se aplikacija izolira u repetativnoj okolini i odvoji od infrastrukture
+
+[Features of Docker](https://www.geeksforgeeks.org/features-of-docker/):
+- Open-source platform
+- An Easy, lightweight, and consistent way of  delivery of applications
+- Fast and efficient development life cycle
+- Segregation of duties
+- Service-oriented architecture
+- Security
+- Scalability
+- Reduction in size
+- Image management
+- Networking
+- Volume management
+
+
+## Struktura
+
+- Dockerfile
+- image
+- container registry
+	- lokalni
+	- dockerhub
+	- AWS ECR
+- container
+
+
+## Dockerfile
+
+- base image
+	- odabir najmanjeg funkcionalnog
+	- debian prije ubuntua
+	- debian-slim prije debiana
+	- alpine
+	- from scratch
+- env varijable
+
+
+## Docker image
+
+- single stage build
+- multistage build
+
+
+## Docker container
+
+run:
+```
+docker run --name api-server-3000 --publish 3000:3000 --env CONTAINER_NAME="Awesome API server on port 3000" -d api-server
+```
+```
+docker run --name api-server-3001 --publish 3001:3000 --env CONTAINER_NAME="Awesome API server on port 3001" -d api-server
+```
+```
+docker run --name api-server-3002 --publish 3002:3000 --env CONTAINER_NAME="Awesome API server on port 3002" -d api-server
+```