FYI Environment Windows 10 machine
aspnetcore proj fails on build cant find csproj

Fix

(1)
aspnetcore.development.dockerfile
/*
FROM microsoft/dotnet:2.1-sdk

LABEL author="Dan Wahlin"

ENV DOTNET_USE_POLLING_FILE_WATCHER=1
ENV ASPNETCORE_URLS=http://*:5000

EXPOSE 5000

WORKDIR /var/www/aspnetcoreapp

COPY AspNetCorePostgreSQLDockerApp.csproj .

CMD ["/bin/bash", "-c", "dotnet restore AspNetCorePostgreSQLDockerApp.csproj && dotnet run"]
*/

(2)
docker build -f aspnetcore.development.dockerfile -t [insert docker id]/dotnet:1.0.0 .

(3)
docker run -d -p 5000:5000 -v "%cd%":/var/www/aspnetcoreapp --link my-postgres:postgres [insert docker id]/dotnet:1.0.0

I'm testing out manual linking using the following command but it fails with an error that it cannot find a .sln or .csproj to build:

I resolved it by attaching a volume to it, by adding -v $(pwd):/var/www/aspnetcoreapp whereby the current directory is where the .csproj file is. It didn't work if my present directory was where the .sln is.

The issue is: Is there a scenario where the given code snippet should work, without me having to add a volume?

Hey Dan,

Just tied this with .net core 2 and get the following

Data/ApplicationDbContext.cs(16,18): error CS0311: The type 'Dashboard.Models.ApplicationUser' cannot be used as type parameter 'TUser' in the generic type or method 'IdentityDbContext'. There is no implicit reference conversion from 'Dashboard.Models.ApplicationUser' to 'Microsoft.AspNetCore.Identity.IdentityUser'. [/Users/JonHallam2/project new /Dashboard/DashboardCoreVs2017-2/Dashboard.csproj]

docker-compose build passes
docker-compose up fails as below

pradeep@seleniumframework>docker info
Containers: 2
 Running: 0
 Paused: 0
 Stopped: 2
Images: 23
Server Version: 1.11.0
Storage Driver: aufs
 Root Dir: /mnt/sda1/var/lib/docker/aufs
 Backing Filesystem: extfs
 Dirs: 109
 Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge null host
Kernel Version: 4.1.19-boot2docker
Operating System: Boot2Docker 1.11.0 (TCL 7.0); HEAD : 32ee7e9 - Wed Apr 13 20:06:49 UTC 2016
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 1.956 GiB
Name: default
ID: FPNF:IOLP:R67R:5JQ2:EMQX:ZUKM:DBNV:3NUZ:UUKN:G2QL:5325:4ZUO
Docker Root Dir: /mnt/sda1/var/lib/docker
Debug mode (client): false
Debug mode (server): true
 File Descriptors: 13
 Goroutines: 30
 System Time: 2016-04-30T01:15:24.064491054Z
 EventsListeners: 0
Registry: https://index.docker.io/v1/
Labels:
 provider=virtualbox

How can i apply migrations inside a Docker Container? So when the container start creates all tables on database.

I'm going through Chapter 7 and trying to run this command manually in the terminal:

I get the following error:

ZemienMacbook:AspNetCorePostgreSQLDockerApp zemien$ docker build -f aspnetcore.development.dockerfile -t zemien/dotnet:1.0.0 
"docker build" requires exactly 1 argument.
See 'docker build --help'.

Usage:  docker build [OPTIONS] PATH | URL | -

Build an image from a Dockerfile

I have replaced [yourDockerHubID] with a username, but I also get the same error if I remove the whole tag option and leave -f in there.

I should note that the containers work when I use docker-compose build and docker-compose up, as outlined in Readme.md. But I wanted to build up my layers of knowledge by following the example.

System info:

• Mac OS Mojave
• Docker CE 2.0.0.3
• Docker Engine 18.09.2

Any advice is appreciated!

Hi,

I've got two (probably newbie) issues :

I cant seem to build the project and run it locally? I'm using..
.NET Command Line Tools (1.0.0-preview3-004056)
Product Information:
Version: 1.0.0-preview3-004056
Commit SHA-1 hash: ccc4968bc3

Runtime Environment:
OS Name: Windows
OS Version: 10.0.10586
OS Platform: Windows
RID: win10-x64

I've tried dotnet run , but it keeps telling me :

MSBUILD : error MSB1003: Specify a project or solution file. The current working directory does not contain a project or solution file.

And the second thing, when I try docker-compose build i get the following:

IOError: [Errno 13] Permission denied: 'C:\source\AspNetCorePostgreSQLDockerApp.vs\AspNetCorePostgreSQLDockerApp\v15\Browse.VC.opendb'
docker-compose returned -1

If it's a totally dumb question, i'm sorry.

With kind regards,

Frank

Hi Dan,

I followed exactly what you wrote but i get the following error when i do docker-compose up:
ERROR: for aspnetcoreapp Cannot create container for service web: invalid volume specification: 'D:\test\AspNetCorePostgreSQLDockerApp-master\AspNetCorePostgreSQLDockerApp:/var/www/aspnetcoreapp:rw'

I work on windows 10.
Any idea ?
Thanks.

What do you think is wrong. I am using Docker Toolbox and accessing this at http://192.168.99.100:5000/

Starting postgres
Recreating aspnetcoreapp
Attaching to postgres, aspnetcoreapp
postgres    | LOG:  database system was shut down at 2016-10-01 19:33:12 UTC
postgres    | LOG:  MultiXact member wraparound protections are now enabled
postgres    | LOG:  database system is ready to accept connections
postgres    | LOG:  autovacuum launcher started
aspnetcoreapp | [DotNetWatcher] info: Running dotnet with the following arguments: run --server.urls http://0.0.0.0:5000
aspnetcoreapp | [DotNetWatcher] info: dotnet process id: 31
aspnetcoreapp | Project WebAPI.Data (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
aspnetcoreapp | Project WebAPI.Domain (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
aspnetcoreapp | Project WebAPI (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
aspnetcoreapp | dbug: Npgsql.NpgsqlConnection[3]
aspnetcoreapp |       Opening connection to database 'webapi' on server 'tcp://postgres:5432'.
aspnetcoreapp | info: Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory[1]
aspnetcoreapp |       Executed DbCommand (1,219ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
aspnetcoreapp |       SELECT EXISTS (SELECT 1 FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON n.oid=c.relnamespace WHERE c.relname='__EFMigrationsHistory');
aspnetcoreapp | dbug: Npgsql.NpgsqlConnection[4]
aspnetcoreapp |       Closing connection to database 'webapi' on server 'tcp://postgres:5432'.
aspnetcoreapp | dbug: Npgsql.NpgsqlConnection[3]
aspnetcoreapp |       Opening connection to database 'webapi' on server 'tcp://postgres:5432'.
aspnetcoreapp | info: Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory[1]
aspnetcoreapp |       Executed DbCommand (105ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
aspnetcoreapp |       SELECT EXISTS (SELECT 1 FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON n.oid=c.relnamespace WHERE c.relname='__EFMigrationsHistory');
aspnetcoreapp | dbug: Npgsql.NpgsqlConnection[4]
aspnetcoreapp |       Closing connection to database 'webapi' on server 'tcp://postgres:5432'.
aspnetcoreapp | dbug: Npgsql.NpgsqlConnection[3]
aspnetcoreapp |       Opening connection to database 'webapi' on server 'tcp://postgres:5432'.
aspnetcoreapp | info: Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommandBuilderFactory[1]
aspnetcoreapp |       Executed DbCommand (239ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
aspnetcoreapp |       SELECT "MigrationId", "ProductVersion"
aspnetcoreapp |       FROM "__EFMigrationsHistory"
aspnetcoreapp |       ORDER BY "MigrationId";
aspnetcoreapp | dbug: Npgsql.NpgsqlConnection[4]
aspnetcoreapp |       Closing connection to database 'webapi' on server 'tcp://postgres:5432'.
aspnetcoreapp | Hosting environment: Production
aspnetcoreapp | Content root path: /app/src/WebAPI
aspnetcoreapp | Now listening on: http://localhost:5000
aspnetcoreapp | Application started. Press Ctrl+C to shut down.

Hi, When I follow both your Pluralsight training and your code. I cant seam to get it to build the docker images.
Ive set the connection string to
var connectionString = "User ID=postgres;Password=password;Server=localhost;Port=5432;Database=postgres;Integrated Security=true;Pooling=true;";

then doing a docker build

docker build -f core.development.dockerfile -t Username/core:latest .

it errors with

An error occurred while calling method 'ConfigureServices' on startup class 'Core.Startup'. Consider using IDbContextFactory to o
verride the initialization of the DbContext at design-time.

Error: Connection refused
System.Net.Sockets.SocketException: Connection refused
at Npgsql.NpgsqlConnector.Connect(NpgsqlTimeout timeout)
at Npgsql.NpgsqlConnector.RawOpen(NpgsqlTimeout timeout)
at Npgsql.NpgsqlConnector.Open(NpgsqlTimeout timeout)
at Npgsql.ConnectorPool.Allocate(NpgsqlConnection conn, NpgsqlTimeout timeout)
at Npgsql.NpgsqlConnection.OpenInternal()
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open()
at Microsoft.EntityFrameworkCore.Storage.Internal.NpgsqlDatabaseCreator.Exists()
at Microsoft.EntityFrameworkCore.Migrations.HistoryRepository.Exists()
at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration)
at Microsoft.EntityFrameworkCore.Design.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType)
at Microsoft.EntityFrameworkCore.Tools.Cli.DatabaseUpdateCommand.<>c__DisplayClass0_0.b__0()
at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args)
at Microsoft.EntityFrameworkCore.Tools.Cli.Program.Main(String[] args)
Connection refused

the solution runs fine its now getting it to build in to docker.

My docker file is below.

FROM microsoft/dotnet:latest

MAINTAINER Jon Hallam

ENV DOTNET_USE_POLLING_FILE_WATCHER=1

COPY . /app

COPY ./package.json /var/www/aspnetcoreapp/package.json

WORKDIR /app

RUN dotnet restore

RUN dotnet build

EXPOSE 5000/tcp

RUN ["dotnet", "ef", "database", "update"]

ENTRYPOINT ["dotnet", "watch", "run", "--server.urls", "http://0.0.0.0:5000"]

ENTRYPOINT ["dotnet", "run", "--server.urls", "http://0.0.0.0:5000"]

Build the image:

docker build -f core.development.dockerfile -t username/core:latest .

Option 1

Start PostgreSQL and ASP.NET Core (link ASP.NET core to ProgreSQL container with legacy linking)

docker run -d --name my-postgres -p 5432:5432 -e POSTGRES_PASSWORD=password postgres

docker run -d -p 5000:5000 --link my-postgres:postgres username/core:latest

Option 2: Create a custom bridge network and add containers into it

docker network create --driver bridge isolated_network

docker run -d --net=isolated_network --name postgres -p 5432:5432 -e POSTGRES_PASSWORD=password postgres

docker run -d --net=isolated_network --name aspnetcoreapp -p 5000:5000 username/core:latest

basically I have Migrations that works great in dev however getting it to deploy migrations when its deployed to docker with postgres it fails.