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Diffstat (limited to 'docker/README.md')
| -rw-r--r-- | docker/README.md | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/docker/README.md b/docker/README.md index 9f112a01d0..8c337149ca 100644 --- a/docker/README.md +++ b/docker/README.md @@ -110,12 +110,12 @@ argument to `docker run`. ## Legacy dynamic configuration file support -For backwards-compatibility only, the docker image supports creating a dynamic -configuration file based on environment variables. This is now deprecated, but -is enabled when the `SYNAPSE_SERVER_NAME` variable is set (and `generate` is -not given). +The docker image used to support creating a dynamic configuration file based +on environment variables. This is no longer supported, and an error will be +raised if you try to run synapse without a config file. -To migrate from a dynamic configuration file to a static one, run the docker +It is, however, possible to generate a static configuration file based on +the environment variables that were previously used. To do this, run the docker container once with the environment variables set, and `migrate_config` command line option. For example: @@ -127,15 +127,20 @@ docker run -it --rm \ matrixdotorg/synapse:latest migrate_config ``` -This will generate the same configuration file as the legacy mode used, but -will store it in `/data/homeserver.yaml` instead of a temporary location. You -can then use it as shown above at [Running synapse](#running-synapse). +This will generate the same configuration file as the legacy mode used, and +will store it in `/data/homeserver.yaml`. You can then use it as shown above at +[Running synapse](#running-synapse). + +Note that the defaults used in this configuration file may be different to +those when generating a new config file with `generate`: for example, TLS is +enabled by default in this mode. You are encouraged to inspect the generated +configuration file and edit it to ensure it meets your needs. ## Building the image If you need to build the image from a Synapse checkout, use the following `docker build` command from the repo's root: - + ``` docker build -t matrixdotorg/synapse -f docker/Dockerfile . ``` |