Docker memo note

Docker memo notes

Build image:
docker build -t myimage/name .

List images:
docker image ls

Run image with publishing ports on host:
docker run --rm -it -p 8080:80 myimage/name

Look inside the container:
docker inspect

### Intermdediate containers ###
Skip removing of intermediate containers:
docker build -t tagName --rm=false --no-cache .

List intermediate containers:
docker ps -a

Check file-system changes for each intermediate container:
docker diff #container-id
###

### Dockerfiles ###
-------------------------------
Dockerfile to run published on the host

FROM microsoft/aspnetcore:2

WORKDIR /
COPY bin/Release/netcoreapp2.0/publish .

ENTRYPOINT ["dotnet", "appQuiz.dll"]

----------------------------------

Dockerfile supporting build in container:

FROM microsoft/aspnetcore-build:2

WORKDIR /api

COPY . .

RUN dotnet restore

RUN dotnet publish -o /publish

WORKDIR /publish

ENTRYPOINT ["dotnet", "/publish/api.dll"]
---------------------------------------

Build it:
docker build -t aspnetcore/api:build .

Run it:
docker run --rm -it -p 8080:80 aspnetcore/api:build 

----------------------------------------
Multi-stage Dockerfile (optimized)

# Build Stage
FROM microsoft/aspnetcore-build:2 AS build-env

WORKDIR /api

COPY  api.csproj .
RUN dotnet restore

COPY . .
RUN dotnet publish -o /publish

# Runtime Image Stage
FROM microsoft/aspnetcore:2

WORKDIR /publish
COPY --from=build-env /publish .

ENTRYPOINT ["dotnet", "api.dll"]
----------------------------------------