# Docker Shell-Commands
Here is a list of the most important docker commands.
# Docker build Container
| flag | definition |
|---|---|
| -t | give image a name |
| -f | finds dockerfile in specific folder |
# build image - Output: ... => => writing image sha256:307e51e493e71a
docker build .
docker build -t imagewithname .
docker build -t helloworld:v3 .
# if .dockerfile is in other folder
docker build -t mynewimage -f /Folder/Dockerfile .# Docker run Container
| flag | definition |
|---|---|
| -p | port forwarding |
| -it | enter internal terminal |
| -d | detached - allows writing in cmd |
| -v | defines a volume |
| —rm | remove container, after it’s stopped |
| —name | give container a name |
docker run -p 1000:3000 307e51e
docker run -it node
docker run -d -p 3000:3000 --rm --name mynewcontainer mynewimage
# anonymous volume
docker run -v /app/data ...
# named volume
docker run -v data:/app/data ...
# bind mount (windows - "/path/to/code:/app/code")
docker run -v /path/to/code:/app/code# Docker basic Commands
# list running containers
docker ps
# list running and stopped containers
docker ps -a
# stop container
docker stop id_or_name
# connect with container bash in internal terminal
docker exec -it name bash
# remove a stopped container
docker rm id_or_name
# remove an image
docker rmi id
# remove all unused images (images where no container is running)
docker image prune
# see information about image
docker image inspect id# Dockerfile
Example of a basic dockerfile (node)
FROM node:14
WORKDIR /app
COPY package.json .
RUN npm install
COPY . .
EXPOSE 3000
CMD [ "node", "app.mjs" ]Example from the .NET-world
FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
USER $APP_UID
WORKDIR /app
EXPOSE 8080
EXPOSE 8081
FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
ARG BUILD_CONFIGURATION=Release
WORKDIR /src
COPY ["Docker_Ex5/Docker_Ex5.csproj", "Docker_Ex5/"]
RUN dotnet restore "Docker_Ex5/Docker_Ex5.csproj"
COPY . .
WORKDIR "/src/Docker_Ex5"
RUN dotnet build "Docker_Ex5.csproj" -c $BUILD_CONFIGURATION -o /app/build
FROM build AS publish
ARG BUILD_CONFIGURATION=Release
RUN dotnet publish "Docker_Ex5.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
VOLUME ["/app/persistent"]
RUN mkdir /app/persistent
RUN chown app /app/persistent
ENTRYPOINT ["dotnet", "Docker_Ex5.dll"]