Added Dockerfile to launch JBR in web server mode

Dockerfile

@@ -0,0 +1,20 @@
+LABEL author = "Oleg Shpynov"
+LABEL email = "[email protected]"
+
+FROM ubuntu:20.04
+
+RUN apt-get update \
+  && apt-get install -y wget \
+  && rm -rf /var/lib/apt/lists/*
+
+RUN wget https://download.jetbrains.com/biolabs/jbr_browser/jar/jbr-1.0.beta.5318.jar  --quiet -O jbr.jar
+
+RUN set -e && mkdir /jbr_session
+
+# JBR sessions should be located here
+VOLUME ["/jbr_session"]
+
+EXPOSE 5000
+
+# JBR in server mode
+ENTRYPOINT java -Xmx8G -jar jbr.jar --server --port 5000 --sessions /jbr_sessions