I have this docker file -
FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS publish
WORKDIR /src
COPY . .
RUN dotnet publish -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "HrManagement.dll"]
placed in
When building the image through the windows cmd, and running the image subsequently, i see that the app folder lists the below files -
However, when i build via docker-compose file in Visual Studio, I see the below ones-
Additionally, i see the src folder as well in the container -
Why is this difference seen when building the SAME docker file through the above methods?
The below is the docker-compose.yml file-
version: '3.4'
services:
hrmanagement:
image: ${DOCKER_REGISTRY-}hrmanager
build:
context: ./HrManagement
dockerfile: ./Dockerfile
sqldata:
image: mcr.microsoft.com/mssql/server:latest
environment:
- SA_PASSWORD=mypass
- ACCEPT_EULA=Y
ports:
- "1450:1433"
volumes:
- sql-server-vol:/var/opt/mssql
volumes:
sql-server-vol:
external: true
placed in
Related
I am facing the problem the host is not found or an error connecting to this hosting
I have tried many different options but have not found a solution to the problem.
My docker-compose file
version: '3.4'
services:
backend:
image: webapiwithdockerpostgre
build:
context: .
dockerfile: WebApiWithDockerPostgre/Dockerfile
database:
image: postgres
restart: always
ports:
- 5432:5432
environment:
POSTGRES_USER: admin
POSTGRES_PASSWORD: superpassworddocker
POSGRES_DB: TestDb
volumes:
- database-data:/var/lib/postgresql/data/
volumes:
database-data:
pgadmin:
My Dockerfile
FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /src
COPY ["WebApiWithDockerPostgre/WebApiWithDockerPostgre.csproj", "WebApiWithDockerPostgre/"]
RUN dotnet restore "WebApiWithDockerPostgre/WebApiWithDockerPostgre.csproj"
COPY . .
WORKDIR "/src/WebApiWithDockerPostgre"
RUN dotnet build "WebApiWithDockerPostgre.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "WebApiWithDockerPostgre.csproj" -c Release -o /app/publish /p:UseAppHost=false
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "WebApiWithDockerPostgre.dll"]
Connection string -
"Host=database;Database=DbTest;Username=admin;Password=superpassworddocker;Port=5432"
Should the database name be TestDb instead of DbTest in your connection string?
I solved my problem, just change Host=database in the connection string to Host=host.docker.internal and it works fine
I have a problem regarding Docker.
When I'm deploying a new version of my app image, the images i have added to the images folder in my wwwroot folder aren't copied..
My Dockerfile looks like this:
FROM microsoft/aspnetcore-build:1.0-projectjson
WORKDIR /app-src
COPY . .
RUN dotnet restore
RUN dotnet publish src/Test -o /app
EXPOSE 5000
WORKDIR /app
ENTRYPOINT ["dotnet", "Test.dll"]
And my docker-compose:
version: '3.8'
services:
app:
image: <dockeruser>/<imagename>:<tag>
links:
- db
environment:
ConnectionStrings__Dataconnection: "Host=db;Username=Username;Password=Password;Database=db"
ports:
- "5000:5000"
volumes:
- ~/data/images:/app/wwwroot/images
db:
image: postgres:9.5
ports:
- "31337:5432"
volumes:
- ~/data/db:/var/lib/postgresql/data/pgdata
environment:
POSTGRES_USER: user
POSTGRES_PASSWORD: password
POSTGRES_DB: db
PGDATA: /var/lib/postgresql/data/pgdata
My current version of docker is:
Docker version 18.09.7, build 2d0083d and docker-compose docker-compose version 1.26.2, build eefe0d31
The exact same files (except for the docker-compose version was set to 2 in docker-compose.yml) worked previously on docker version Docker version 17.03.0-ce, build 60ccb22 and docker-compose version docker-compose version 1.9.0, build 2585387
I store my new images in my repos wwwroot/images folder, and then push them to the repo, and then dockerhub automatically builds an image from the new commit. On the server i then pull the new docker-image and run the docker-compose down -v command followed by docker-compose up -d but the images is not available in the app afterwards.
Disclaimer: This is a project I have overtaken and I'm aware of some of the very old software versions.
Your images may be in your container image, but since you are doing a bind mount whatever is in your server’s “~/data/images” directory will basically “override/replace” what’s in your image when the container is created.
Try removing the volume from the app service, basically remove this:
volumes:
- ~/data/images:/app/wwwroot/images
The other thing you can try is to manually copy the images to the “~/data/images” directory on the server.
Have a small ftp server with http in a app, which runs fine in a vm.
I'm trying to dockerize it, which when I do, works ok If I ssh in the container (I can telnet both localhost and the container VM), but I can't access from the machine.
Here is my dockerfile:
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
COPY ["proj.csproj", "proj"]
RUN dotnet restore "proj/proj.csproj"
COPY . .
WORKDIR "/src/proj"
RUN dotnet build "proj.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "proj.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
EXPOSE 21
EXPOSE 80
ENV ASPNETCORE_ENVIRONMENT=development
ENTRYPOINT ["dotnet", "proj.dll", "--urls", "http://0.0.0.0:80"]
Docker inspect:
"Ports": {
"21/tcp": null,
"80/tcp": null
PS: I changed the paths manually to not expose my project, so may have some mistakes with folders name
I've been looking around this image for any cert managers but I can't find anything that will help me install a .cer certificate. The 1709 nanoserver image doesn't come with powershell so in order to use that I would have to do a multi-staged build with the microsoft/windowsservercore image but I'm not quite sure how I'd go about doing this, I can't seem to find anything through google that will help.
If anybody knows a way to install the cert with or withour a multi-stage build that would be very appreciated.
For those interested, here's my docker-compose.yml and Dockerfile
docker-compose.yml
version: '3'
services:
myapp:
image: myapp
ports:
- "5000:80"
build:
context: .
dockerfile: MyApp\Dockerfile
container_name: "myapp"
hostname: "myapp"
depends_on:
- db
db:
image: "microsoft/mssql-server-windows-express"
environment:
SA_PASSWORD: ""
ACCEPT_EULA: "Y"
container_name: "myapp"
hostname: "myapp"
Dockerfile
FROM microsoft/aspnetcore:2.0-nanoserver-1709 AS base
WORKDIR /app
EXPOSE 80
FROM microsoft/aspnetcore-build:2.0-nanoserver-1709 AS build
WORKDIR /src
COPY MyApp.sln ./
COPY MyApp/MyApp.csproj MyApp/
RUN dotnet restore -nowarn:msb3202,nu1503
COPY . .
WORKDIR /src/MyApp
RUN dotnet restore
RUN dotnet ef database update
RUN dotnet build -c Release -o /app
FROM build AS publish
RUN dotnet publish -c Release -o /app
FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "MyApp.dll"]
Thanks!
On some images, there is a tool called certoc.exe that allows you to import a certificate (usage: certoc.exe -addstore root my_root_certificate.cer).
This tool is not present on the 1709 images, but is present on images such as microsoft/nanoserver:sac2016.
To sum-up, the best way I found to deal with that is to change the Dockerfile to contain something like:
FROM microsoft/nanoserver:sac2016 as tool
COPY --from=tool /Windows/System32/certoc.exe .
USER ContainerAdministrator
RUN certoc.exe -addstore root my_root_certificate.cer
Complete example available here: https://pvlerick.github.io/2018/11/how-to-run-an-https-asp.net-core-app-using-test-certificates-in-nanoserver-1709-1803-with-docker
A huge thanks to Joshua Chini here: https://joshuachini.com/2018/02/08/how-to-import-an-enterprise-certificate-into-a-windows-container/
Hi I am following the guidance on this blog post, "Managing containerized ASP.NET Core apps with Kubernetes"
https://cloudplatform.googleblog.com/2016/10/managing-containerized-ASP.NET-Core-apps-with-Kubernetes.html
I am stuck at the stage where you get docker to build the image
docker build -t gcr.io/xxxx/hello-dotnet:v1 .
This is the error I am getting.
unable to process Dockerfile: unable to parse repository info: repository name component must match "[a-z0-9](?:-*[a-z0-9])*(?:[._][a-z0-9](?:-*[a-z0-9])*)*"
Contents of my Dockerfile are
FROM microsoft/dotnet:1:1.0.1-core
COPY . /app
WORKDIR /app
RUN ["dotnet", "restore"]
RUN ["dotnet", "build"]
EXPOSE 8080/tcp
ENV ASPNETCORE_URLS http://*:8080
ENTRYPOINT ["dotnet", "run"]
The first line of your Dockerfile should be:
FROM microsoft/dotnet:1.0.1-core