Add UID/GID option and custom config base for docker

Closes #13

Dockerfile

@@ -1,5 +1,8 @@
 FROM alpine:3.8
 
+ENV UID=1337 \
+    GID=1337
+
 COPY . /opt/maubot
 WORKDIR /opt/maubot
 RUN apk add --no-cache \
@@ -9,8 +12,9 @@ RUN apk add --no-cache \
       py3-bcrypt \
       py3-cffi \
       ca-certificates \
+      su-exec \
  && pip3 install -r requirements.txt
 
 VOLUME /data
 
-CMD ["/opt/maubot/docker-run.sh"]
+CMD ["/opt/maubot/docker/run.sh"]

docker-run.sh

@@ -1,25 +0,0 @@
-#!/bin/sh
-
-cd /opt/maubot
-
-# Replace database path in config.
-sed -i "s#sqlite:///maubot.db#sqlite:////data/maubot.db#" /data/config.yaml
-sed -i "s#- ./plugins#- /data/plugins#" /data/config.yaml
-sed -i "s#upload: ./plugins#upload: /data/plugins#" /data/config.yaml
-sed -i "s#trash: ./trash#trash: /data/trash#" /data/config.yaml
-sed -i "s#db: ./plugins#trash: /data/dbs#" /data/config.yaml
-sed -i "s#./logs/maubot.log#/var/log/maubot/maubot.log#" /data/config.yaml
-
-mkdir -p /var/log/maubot /data/plugins /data/trash /data/dbs
-
-# Check that database is in the right state
-alembic -x config=/data/config.yaml upgrade head
-
-if [ ! -f /data/config.yaml ]; then
-	cp example-config.yaml /data/config.yaml
-	echo "Config file not found. Example config copied to /data/config.yaml"
-	echo "Please modify the config file to your liking and restart the container."
-	exit
-fi
-
-python3 -m maubot -c /data/config.yaml

docker/example-config.yaml

@@ -0,0 +1,66 @@
+# The full URI to the database. SQLite and Postgres are fully supported.
+# Other DBMSes supported by SQLAlchemy may or may not work.
+# Format examples:
+#   SQLite:   sqlite:///filename.db
+#   Postgres: postgres://username:password@hostname/dbname
+database: sqlite:////data/maubot.db
+
+plugin_directories:
+    # The directory where uploaded new plugins should be stored.
+    upload: /data/plugins
+    # The directories from which plugins should be loaded.
+    # Duplicate plugin IDs will be moved to the trash.
+    load:
+    - /data/plugins
+    # The directory where old plugin versions and conflicting plugins should be moved.
+    # Set to "delete" to delete files immediately.
+    trash: /data/trash
+    # The directory where plugin databases should be stored.
+    db: /data/plugins
+
+server:
+    # The IP and port to listen to.
+    hostname: 0.0.0.0
+    port: 29316
+    # The base management API path.
+    base_path: /_matrix/maubot/v1
+    # The base appservice API path. Use / for legacy appservice API and /_matrix/app/v1 for v1.
+    appservice_base_path: /_matrix/app/v1
+    # The shared secret to sign API access tokens.
+    # Set to "generate" to generate and save a new token at startup.
+    unshared_secret: generate
+
+# List of administrator users. Plaintext passwords will be bcrypted on startup. Set empty password
+# to prevent normal login. Root is a special user that can't have a password and will always exist.
+admins:
+    root: ""
+
+# Python logging configuration.
+#
+# See section 16.7.2 of the Python documentation for more info:
+# https://docs.python.org/3.6/library/logging.config.html#configuration-dictionary-schema
+logging:
+    version: 1
+    formatters:
+        precise:
+            format: "[%(asctime)s] [%(levelname)s@%(name)s] %(message)s"
+    handlers:
+        file:
+            class: logging.handlers.RotatingFileHandler
+            formatter: precise
+            filename: /var/log/maubot.log
+            maxBytes: 10485760
+            backupCount: 10
+        console:
+            class: logging.StreamHandler
+            formatter: precise
+    loggers:
+        maubot:
+            level: DEBUG
+        mautrix:
+            level: DEBUG
+        aiohttp:
+            level: INFO
+    root:
+        level: DEBUG
+        handlers: [file, console]

docker/run.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+function fixperms {
+    chown -R $UID:$GID /var/log /data /opt/maubot
+}
+
+cd /opt/maubot
+
+if [ ! -f /data/config.yaml ]; then
+	cp docker/example-config.yaml /data/config.yaml
+	mkdir -p /var/log /data/plugins /data/trash /data/dbs
+	echo "Config file not found. Example config copied to /data/config.yaml"
+	echo "Please modify the config file to your liking and restart the container."
+	fixperms
+	exit
+fi
+
+mkdir -p /var/log/maubot /data/plugins /data/trash /data/dbs
+#alembic -x config=/data/config.yaml upgrade head
+fixperms
+exec su-exec $UID:$GID python3 -m maubot -c /data/config.yaml -b docker/example-config.yaml