Adding Dockerfile

Dockerfile

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+# Docker image for Tweet-Toot project.
+FROM ubuntu
+MAINTAINER ayushsharma.22+tweettoot@gmail.com
+
+ARG mastodon_token
+ARG papertrail_token
+
+RUN cd /root;\
+	apt-get -y update;\
+	apt-get -y upgrade;\
+	apt-get -y install python3 python3-pip git wget cron;\
+	git clone https://github.com/ayush-sharma/tweet-toot.git;\
+	cd tweet-toot;\
+	pip3 install -r requirements.txt;\
+	apt-get -y purge python3-pip git;\
+	apt-get -y autoremove;\
+	apt-get -y autoclean;\
+	# Configure Tweet-Toot
+	sed -i 's/"toots.app_secure_token": ""/"toots.app_secure_token": "'$mastodon_token'"/g' config.json
+
+# Install Papertrail agent
+RUN wget -qO - --header="X-Papertrail-Token: "$papertrail_token https://papertrailapp.com/destinations/10693082/setup.sh | bash;\
+	wget -qO - https://github.com/papertrail/remote_syslog2/releases/download/v0.20/remote-syslog2_0.20_amd64.deb;\
+	dpkg -i remote-syslog2_0.20_amd64.deb;\
+	remote_syslog \
+	  -p 22420 \
+	  -d logs7.papertrailapp.com \
+	  --pid-file=/var/run/remote_syslog.pid \
+	  /tmp/tweet-toot.log;\
+	apt-get -y purge wget
+
+RUN my_pwd=`pwd`;\
+	crontab -l > /tmp/crontab;\
+	echo '* * * * * python3 '$my_pwd'/run.py >> /tmp/tweet-toot.log' >> /tmp/crontab;\
+	crontab /tmp/crontab