To make it more secure, you may write your credentials in a configuration file and do docker run with --env-file as mentioned here. Then you can control the access of that configuration file so that others …

Jun 24, 2021 · W/o Docker Compose Docker containers do not know about environment variables on the host system. To set an environment variable in a container, you have to specify it: docker run -e …

$ docker run --env-file=env_file_name alpine env With docker-compose.yml files, we just reference a env_file, and Docker parses it for the variables to set. version: '3' services: plex: image: …

I was having a similar roadblock and found that the --env-file parameter only for docker compose config command. On top of that using the docker compose env_file variable, still forced me to repeat values …

Apr 30, 2019 · Build the image with a tag: docker build -t ${image}_dev . Run the image using the tag to get the environment variables and add them to the end of the docker file

Mar 19, 2019 · 97 This is for those looking to pass env variable from docker-compose using .env file to dockerfile during build and then pass those args as env variable to container. Typical docker …

Jul 6, 2018 · 64 I am using a base.env as an env_file for several of my docker services.In this base.env I have several parts of the environment variable that repeat throughout the file. For example, port and …

Mar 4, 2024 · The env variables are not available during the build (e.g. with a RUN command inside the Dockerfile). Sidenote: I don't necessarily need to access the env variables directly inside the docker …

Feb 6, 2025 · The title is a little bit misleading, since you from the Docker Compose point of view you don’t want builtime environment variables (build args), only different variables for the submodules …

Oct 4, 2018 · If you are using just docker without docker-compose, try using the ENV property in the Dockerfile to initialise the process.env.variable. If you want to get the env from the CLI or during build …