docker-image

# LAB1 | Docker Image

## Pull Image

docker pull alpine  
docker pull ubuntu:18.04  

## Dockerfile

mkdir docker-image  
cd docker-image  

https://docs.docker.com/engine/reference/builder/  

vim Dockerfile  
```
FROM ubuntu:18.04
RUN apt update -y && apt install -y nginx
CMD ["nginx", "-g", "daemon off;"]
EXPOSE 80
```

docker build -t latihan1 .  
docker images  
docker run -d latihan1  

---

mkdir weather-app  
cd weather-app  
git clone https://github.com/linuxacademy/content-weather-app.git src  

vim Dockerfile  
```
FROM node:lts
WORKDIR /app
ADD src/ /app/
RUN npm install
EXPOSE 3000
CMD ./bin/www
```

docker build -t kudaliar032/weather-app:v1 .  
docker run -d --name weather-app1 -p 8000:3000 kudaliar032/weather-app:v1  

## Environment Variable

mkdir env  
cd env  

```
--env [KEY]=[VALUE]

or

ENV [KEY]=[VALUE]
ENV [KEY] [VALUE]
```

git clone https://github.com/linuxacademy/content-weather-app.git src  

vim Dockerfile  

```
FROM node:lts

ENV NODE_ENV=development
ENV PORT 3000

WORKDIR /app
ADD src/ /app/
RUN npm install

EXPOSE $PORT

CMD ./bin/www
```

docker build -t kudaliar032/weather-app:v2 .  

docker images  
docker image inspect kudaliar032/weather-app:v2  
printenv  

docker run -d --name weather-dev -p 8080:3030 --env PORT=3030 kudaliar032/weather-app:v2  
docker inspect weather-dev  
access [IP-SERVER]:8080  

docker run -d --name weather-app2 -p 8181:3131 --env PORT=3131 --env NODE_ENV=production kudaliar032/weather-app:v2  
docker ps  
docker inspect weather-app2  
access [IP-SERVER]:8181  

docker ps  
docker stop [CONTAINER-NAME]  

## Build Agruments

```
--build-arg [KEY]=[VALUE]

ARG [KEY]=[DEFAULT_VALUE]
```

mkdir args  
cd args  

git clone https://github.com/linuxacademy/content-weather-app.git src  

vim Dockerfile  

```
FROM node:lts

ARG SRC_DIR=/app

WORKDIR $SRC_DIR
ADD src/ $SRC_DIR
RUN npm install
EXPOSE 3000

CMD ./bin/www
```

docker build -t kudaliar032/weather-app:v3 --build-arg SRC_DIR=/var/code .  
docker images  

docker image inspect kudaliar032/weather-app:v3 | grep WorkingDir  

docker run -d --name weather-app3 -p 8000:3000 kudaliar032/weather-app:v3  

access [IP-SERVER]:8000  

docker ps  
docker stop [CONTAINER-NAME]  

## Docker Image with Volume

mkdir volumes  
cd volumes  

vim Dockerfile  

```
FROM nginx
VOLUME ["/usr/share/nginx/html"]
```

docker build -t kudaliar032/nginx:v1 .  

docker run -d --name nginx-volume kudaliar032/nginx:v1  

docker inspect nginx-volume  

docker volume ls  

docker volume inspect [VOLUME-NAME]  

docker ps  
docker stop [CONTAINER-NAME]  

## Entrypoint and Commands

mkdir entrypoint  
cd entrypoint  

git clone https://github.com/linuxacademy/content-weather-app.git src  

vim Dockerfile  
```
FROM node:lts

ENV NODE_ENV="production"
ENV PORT 3000
ARG SRC_DIR=/app

WORKDIR $SRC_DIR
ADD src/ $SRC_DIR
RUN npm install
EXPOSE $PORT
ENTRYPOINT ./bin/www
```

docker build -t kudaliar032/weather-app:v4 .  

docker run -d --name weather-app4 kudaliar032/weather-app:v4  

docker inspect weather-app4 | grep Cmd  

docker run -d --name weather-app5 -p 8000:3000 kudaliar032/weather-app:v4 echo "Hello World"  

docker inspect weather-app5  

## .dockerignore

mkdir dockerignore  
cd dockerignore  

git clone https://github.com/linuxacademy/content-weather-app.git src  

cd src  
git checkout dockerignore  
cd ../  

vim .dockerignore  
```
# Ignore these files
*/*.md
*/.git
src/docs/
*/tests/
```

vim Dockerfile  
```
FROM node:lts

ENV NODE_ENV="production"
ENV PORT 3000
ARG SRC_DIR=/app

WORKDIR $SRC_DIR
ADD src/ $SRC_DIR
RUN npm install
EXPOSE $PORT
ENTRYPOINT ["./bin/www"]
```

docker build -t kudaliar032/weather-app:v5 .  
docker images  

docker run -d --name weather-app-ignore kudaliar032/weather-app:v5  

docker exec weather-app-ignore ls -lha /app  

## Image history

docker history [IMAGE-NAME]  

```
-H: Humanable
--no-trunc: Don't truncate output
```