add openresty and ssdb

ssdb/Dockerfile

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+FROM alpine
+LABEL maintainer="Leonard Buskin <leonardbuskin@gmail.com>"
+
+ARG VERSION=${VERSION:-master}
+
+RUN apk add --no-cache --virtual .build-deps \
+      curl gcc g++ make autoconf libc-dev libevent-dev linux-headers perl tar \
+    && mkdir -p /ssdb/tmp \
+    && curl -Lk "https://github.com/ideawu/ssdb/archive/${VERSION}.tar.gz" | \
+       tar -xz -C /ssdb/tmp --strip-components=1 \
+    && cd /ssdb/tmp \
+    && make -j$(getconf _NPROCESSORS_ONLN) \
+    && make install PREFIX=/ssdb \
+    && rm -rf /ssdb/tmp \
+    && apk add --virtual .rundeps libstdc++ \
+    && apk add --no-cache bash python2 \
+    && apk del .build-deps
+
+EXPOSE 8888
+VOLUME /ssdb/var
+COPY ssdb.conf /ssdb/ssdb.conf
+CMD ["/ssdb/ssdb-server", "/ssdb/ssdb.conf"]

ssdb/ssdb.conf

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+# ssdb-server config
+# MUST indent by TAB!
+
+# relative to path of this file, directory must exists
+work_dir = /data
+pidfile = /run/ssdb.pid
+
+server:
+	#ip: 127.0.0.1
+	port: 8888
+	# bind to public ip
+	ip: 0.0.0.0
+	# format: allow|deny: all|ip_prefix
+	# multiple allows or denys is supported
+	deny: all
+	allow: 127.0.0.1
+	allow: 192.
+	allow: 172.
+	# auth password must be at least 32 characters
+	#auth: very-strong-password
+
+replication:
+	binlog: yes
+	# Limit sync speed to *MB/s, -1: no limit
+	sync_speed: -1
+	slaveof:
+		# to identify a master even if it moved(ip, port changed)
+		# if set to empty or not defined, ip:port will be used.
+		#id: svc_2
+		# sync|mirror, default is sync
+		#type: sync
+		#host: s1.ssdb.db
+		#port: 8888
+
+logger:
+	level: warn
+	output: /var/log/ssdb.log
+	rotate:
+		size: 1000000000
+
+leveldb:
+	# in MB
+	cache_size: 500
+	# in KB
+	block_size: 32
+	# in MB
+	write_buffer_size: 64
+	# in MB
+	compaction_speed: 1000
+	# yes|no
+	compression: yes
+