matrix-docker-ansible-deploy/roles/matrix-postgres/templates/systemd/matrix-postgres.service.j2

#jinja2: lstrip_blocks: "True"
[Unit]
Description=Matrix Postgres server
After=docker.service
Requires=docker.service
DefaultDependencies=no

[Service]
Type=simple
Environment="HOME={{ matrix_systemd_unit_home_path }}"
ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-postgres 2>/dev/null'
ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-postgres 2>/dev/null'

# We need /dev/shm to be larger than the default to allow VACUUM to work.
# See:
# - https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1362
# - https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1268
ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-postgres \
			--log-driver=none \
			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
			--cap-drop=ALL \
			--read-only \
			--tmpfs=/tmp:rw,noexec,nosuid,size=100m \
			--tmpfs=/run/postgresql:rw,noexec,nosuid,size=100m \
			--shm-size="256m" \
			--network={{ matrix_docker_network }} \
			{% if matrix_postgres_container_postgres_bind_port %}
			-p {{ matrix_postgres_container_postgres_bind_port }}:5432 \
			{% endif %}
			--env-file={{ matrix_postgres_base_path }}/env-postgres-server \
			--mount type=bind,src={{ matrix_postgres_data_path }},dst=/var/lib/postgresql/data \
			--mount type=bind,src=/etc/passwd,dst=/etc/passwd,ro \
			{% for arg in matrix_postgres_container_extra_arguments %}
			{{ arg }} \
			{% endfor %}
			{{ matrix_postgres_docker_image_to_use }} \
			postgres {{ matrix_postgres_process_extra_arguments|join(' ') }}

ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-postgres 2>/dev/null'
ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-postgres 2>/dev/null'
Restart=always
RestartSec=30
SyslogIdentifier=matrix-postgres

[Install]
WantedBy=multi-user.target