We use AsciiDoc as the format for our documentation for the user group project. AsciiDoc is a bit like Markdown, but it supports multi-file documents out of the box and without any quirks. We use the Ruby app Asciidoctor to turn our AsciiDoc files into a PDF as part of our build job. Since building …
After last week’s success with BrowserStack, I tried to run Playwright on Selenium Grid. The user experience for this use case is at the opposite end of the scale. The documentation is not much help and Selenium Grid has its own incompatibilities. Let’s look at how we can still make it work. Preparation I …
Sometimes it would be great to have a web browser in a specific version. Installing that on your machine may not be possible, but that is exactly the problem we can use dev containers for. Let’s look how Selenium and Docker can help us to get more flexibility (and additional features). This post is part …
We run into a strange error when we added a new environment variable to our Docker Compose file:
|
1 |
$ docker-compose up |
ERROR: Invalid interpolation format for “environment” option in service “api”: “MY_KEY=Abc$5” Our docker-compose.yaml file looks like this:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
version: "3.2" services: db: image: mcr.microsoft.com/mssql/server:latest volumes: - ./container_db:/var/opt/mssql/data environment: ACCEPT_EULA: Y SA_PASSWORD: P@ssword123 ports: - 6000:1433 api: image: mcr.microsoft.com/dotnet/sdk:6.0 volumes: - ./MinApi:/workspace working_dir: /workspace command: sh -c 'while true; do sleep 30; done' environment: - MY_KEY=Abc$5 ports: - 7001:7000 depends_on: - db |
The problem is the $ in the value of the environment variable MY_KEY. Docker allows a lot of …
Before we conclude this series, let us recapitulate what we learned over the last weeks on dev containers. What can run on Linux can run in a dev container This may sound very simplified, but it is a good rule of thumb: When your dependency can run on Linux you can put it into …
After creating dev containers for Ruby, Rails and .Net 6 it is time to take a look at Python and how we can put our development environment into a Docker container. This post is part of my journey to learn Python. You can find the other parts of this series here. You find the code …
.Net 6 runs on Linux and that allows us to create a dev container without any hassle. Let’s look what we need to run a minimalistic API project inside a dev container and connect it to the SQL Server we created last week. The minimalistic API project Part of .Net 6 is the minimal …
Dev containers are not only for old software. They are also a great help when you plan a migration and need a new technology stack. Let’s look how SQL Server 2019 works nicely with our dev containers. SQL Server 2019 on Linux If you want to use SQL Server 2019 in a container you …
After the preparations of the last weeks, it is now time to put everything together and run our Rails application in a dev container. Prerequisites Rails is a Ruby web framework and therefore needs a Ruby image as a starting point. Please follow my post “Dev Container for Ruby Apps” to figure out what …
PostgreSQL is a free and open-source relational database that I use for most of my private database projects. Today we explore the steps to put PostgreSQL into a dev container. Get the PostgreSQL Docker image You find the official Docker images for PostgreSQL on hub.docker.com. If you need a specific version, you can get …