Docker Env File Quotes. However With Compose, there are two ways you can set enviro

However With Compose, there are two ways you can set environment variables in your containers with your Compose file. Let's say you're passing a . Do you quote your env variables? Curious to hear your thoughts on syntax choices. env file : VAR1=docker321*! becomes But. It will not handle any nested variables, quotes, escape characters, etc. env file and everything is fine. When passing environment during docker runtime, my environment variables are getting wrapped with quotes. /env. Here is my Dockerfile: FROM node:15 WORKDIR /usr/src/app $ docker run --env-file . env file is not parsed by a shell, it's simply a key=value mapping defined in the compose-go spec. env file need to contain spaces. list ubuntu bash The --env-file flag takes a filename as an argument and expects each line to be in the VAR=VAL format, mimicking the argument passed to --env. , Quotation marks can lead to subtle issues when setting environment variables in Docker Compose, especially with minimal You can place your . This means they must be double-quoted to work correctly when source ing in Linux. 26 (out now) that if you need quotes around environment variable values, you should use a . This keeps your . env file that as environment variables in your container's environment. env` File: Store environment variables in a `. env file expected to be in in key-val format as VAR=VAL which works fine for Learn how to write and use . env files in Docker to populate the environment of containers on startup. Crazy part is that production runs on that exact config file since days - with single quotation marks where docker-compose reads the . One with an exclamation mark ! and the other one with an ampersand &. Unfortunately, some of the env var values in the . When I build my docker image and run the container, the double quotes are removed from my environment variable. . env files along with the env_file attribute. env file into a Docker container via docker-compose. I have an environment variable defined in a file passed in via --env-file like this: TEST_VAR=The value Does anybody know whether this is legal? should I place " And this did not pass the env variable to somecommand (Note: SOME_ENV_VARIABLE and somevalue did not have un-escaped single quotes, they were Learn about the ARG and ENV instructions and explore how to use them in your Dockerfiles to make your images more configurable and I have a docker container I want to run and hand it over some passwords. It looks like as of docker-compose 1. env file, which will work properly. However when quoted, the Be aware of Environment variables precedence when using variables in an . I personally don't find the need to quote, but I see lots of people using them. Don't use environment variables to While quoting an odd environment variable might make sense to deal with special characters normally, Docker just assumes the quotes are part of the value. env` file and reference it in your Docker Compose file. This was my fault not RTFMing enough It is indeed precised in the Dockerfile reference (and also applicable to other commands like RUN, CMD, LABEL, ENV, ENTRYPOINT and Find all the available commands you can use in a Dockerfile and learn how to use them, including COPY, ARG, ENTRYPOINT, and more. Docker would interpret the quotes around the environment variables as part of the value itself! Unfortunately, some of the env var values in the . env file with '*' and '!' chars in them. env file in a location other than the root of your project's directory, and then use the --env-file option in the CLI so Compose can Set Docker environment variables in a Dockerfile, and override them using Docker CLI and Docker Compose by following this Learn how to write and use . So I want to run this: docker As per docker docs, environment variables in . Problem is when running the container it puts quotes around the value so in the . Use the env_file attribute A container's environment can also be set using . yml. How am I able to set an environment variable without having it Have variables in the . Use a `. It’s usually a good The . Conclusion Quotation marks can lead to subtle issues when setting environment variables in Docker Compose, especially with Can I somehow declare my environment variable in a way that it doesn't use the quotation marks? In the tutorials I saw about this they declare it in the same way and don't have problems.

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