docker run error environment variable contains whitespaces

Question

I have environment variable file like follow name .env-template

export S3_BASE_FOLDER_URL="oa-eui-dev-plt-env-kpidev-oa"
export AWS_ACCESS_KEY_ID=""
export AWS_SECRET_ACCESS_KEY=""
export AWS_DEFAULT_REGION="us-west-1"
export DB_HOST="host.docker.internal"
export DB_NAME="bcpdemo"
export DB_USER="SA"
export DB_PASS="1234Qwer!"
export BATCH_IMPORT_JOB_NAME=""
AWS_BATCH_JOB_ARRAY_INDEX=0

while running docker run command like

docker run --env-file env_template --name bcpbatchcontainer bcpbatchimage

It is shwoing follwoing error

docker: open env_template: The system cannot find the file specified.
See 'docker run --help'.

If I pass env variable with -e it is not showing any problem. But I need to pass with file.

Answer 1

According to docs you have to use relative path (./).

This works for me:

docker run --env-file ./.env-template <your_image>

Also your .env file doesn't need export, this works:

S3_BASE_FOLDER_URL="oa-eui-dev-plt-env-kpidev-oa"
AWS_ACCESS_KEY_ID=""
AWS_SECRET_ACCESS_KEY=""
AWS_DEFAULT_REGION="us-west-1"
DB_HOST="host.docker.internal"
DB_NAME="bcpdemo"
DB_USER="SA"
DB_PASS="1234Qwer!"
BATCH_IMPORT_JOB_NAME=""
AWS_BATCH_JOB_ARRAY_INDEX=0

If you try to maintain export word it throws an error:

docker: poorly formatted environment: variable 'export S3_BASE_FOLDER_URL' contains whitespaces.