Dockerify the AmbassadorBot

Dockerfile

@@ -0,0 +1,32 @@
+FROM ruby:2.4.1-alpine
+
+LABEL maintainer="https://github.com/mbilokonsky/ambassador" \
+      description="A mastodon bot for showing the world the best your instance has to offer."
+
+ENV UID=992 GID=992
+
+WORKDIR /ambassador
+
+RUN echo "@edge https://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories \
+ && apk -U upgrade \
+ && apk add -t build-dependencies \
+    build-base \
+    postgresql-dev \
+ && apk add \
+    nodejs-npm@edge \
+    nodejs@edge \
+    su-exec \
+    tini \
+ && npm install -g npm@3 && npm install -g yarn \
+ && update-ca-certificates \
+ && rm -rf /tmp/* /var/cache/apk/*
+
+COPY index.js package.json yarn.lock /ambassador/
+
+RUN yarn
+
+COPY docker_entrypoint.sh /usr/local/bin/run
+
+RUN chmod +x /usr/local/bin/run
+
+ENTRYPOINT ["/usr/local/bin/run"]

docker_entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+echo "Creating ambassador user (UID : ${UID} and GID : ${GID})..."
+addgroup -g ${GID} ambassador && adduser -h /ambassador -s /bin/sh -D -G ambassador -u ${UID} ambassador
+
+echo "Updating permissions..."
+chown -R ambassador:ambassador /ambassador
+
+echo "Executing process..."
+cd /ambassador
+exec su-exec ambassador:ambassador /sbin/tini -- "$@"
+

package.json

@@ -11,7 +11,7 @@
     "pm2": "^2.4.4"
   },
   "scripts": {
-    "start": "pm2 start index.js",
-    "restart": "pm2 restart index"
+    "start": "pm2 start --no-daemon index.js",
+    "restart": "pm2 restart --no-daemon index"
   }
 }