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Add support for Synapse container image customization

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This allows people to augment the Synapse image with custom tools and
addons without having to rebuild it from scratch.

If customizations are enabled, the playbook will build a new
`localhost/matrixdotorg/synapse:VERSION-customized` image
on top of the default one (`FROM matrixdotorg/synapse:VERSION`)
and with custom Dockerfile build steps.

For servers that self-build the Synapse image, the Synapse image will be
built first, before proceding to extend it the same way.

In the future, we'll also have easy to enable Dockerfile build steps
for modules that the playbook supports.
This commit is contained in:
Slavi Pantaleev
2022-10-14 16:33:19 +03:00
parent 0da068c7e6
commit 881fdd28f0
8 changed files with 63 additions and 4 deletions
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33
roles/matrix-synapse/defaults/main.yml
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@ -7,14 +7,47 @@ matrix_synapse_enabled: true
matrix_synapse_container_image_self_build: false
matrix_synapse_container_image_self_build_repo: "https://github.com/matrix-org/synapse.git"
# matrix_synapse_container_image_customizations_enabled controls whether a customized Synapse image will be built.
#
# We toggle this variable to `true` when certain features which require a custom build are enabled.
# Feel free to toggle this to `true` yourself and specify build steps in `matrix_synapse_container_image_customizations_dockerfile_body_custom`.
#
# See:
# - `roles/matrix-synapse/templates/synapse/customizations/Dockerfile.j2`
# - `matrix_synapse_container_image_customizations_dockerfile_body_custom`
# - `matrix_synapse_docker_image_customized`
# - `matrix_synapse_docker_image_final`
matrix_synapse_container_image_customizations_enabled: "{{ matrix_synapse_ext_synapse_s3_storage_provider_enabled }}"
# matrix_synapse_container_image_customizations_dockerfile_body contains your custom Dockerfile steps
# for building your customized Synapse image based on the original (upstream) image (`matrix_synapse_docker_image`).
# A `FROM ...` clause is included automatically so you don't have to.
#
# Example:
# matrix_synapse_container_image_customizations_dockerfile_body_custom: |
# RUN echo 'This is a custom step for building the customized Docker image for Synapse.'
# RUN echo 'You can override matrix_synapse_container_image_customizations_dockerfile_body_custom to add your own steps.'
# RUN echo 'Note that matrix_synapse_container_image_customizations_dockerfile_body_auto injects steps before this.'
# RUN echo 'You do NOT need to include a FROM clause yourself.'
matrix_synapse_container_image_customizations_dockerfile_body_custom: ''
matrix_synapse_docker_image: "{{ matrix_synapse_docker_image_name_prefix }}matrixdotorg/synapse:{{ matrix_synapse_docker_image_tag }}"
matrix_synapse_docker_image_name_prefix: "{{ 'localhost/' if matrix_synapse_container_image_self_build else matrix_container_global_registry_prefix }}"
matrix_synapse_version: v1.68.0
matrix_synapse_docker_image_tag: "{{ matrix_synapse_version }}"
matrix_synapse_docker_image_force_pull: "{{ matrix_synapse_docker_image.endswith(':latest') }}"
# matrix_synapse_docker_image_customized is the name of the locally built Synapse image
# which adds various customizations on top of the original (upstream) Synapse image.
# This image will be based on the upstream `matrix_synapse_docker_image` image, only if `matrix_synapse_container_image_customizations_enabled: true`.
matrix_synapse_docker_image_customized: "localhost/matrixdotorg/synapse:{{ matrix_synapse_docker_image_tag }}-customized"
# matrix_synapse_docker_image_final holds the name of the Synapse image to run depending on whether or not customizations are enabled.
matrix_synapse_docker_image_final: "{{ matrix_synapse_docker_image_customized if matrix_synapse_container_image_customizations_enabled else matrix_synapse_docker_image }} "
matrix_synapse_base_path: "{{ matrix_base_data_path }}/synapse"
matrix_synapse_docker_src_files_path: "{{ matrix_synapse_base_path }}/docker-src"
matrix_synapse_customized_docker_src_files_path: "{{ matrix_synapse_base_path }}/customized-docker-src"
matrix_synapse_config_dir_path: "{{ matrix_synapse_base_path }}/config"
matrix_synapse_storage_path: "{{ matrix_synapse_base_path }}/storage"
matrix_synapse_media_store_path: "{{ matrix_synapse_storage_path }}/media-store"