Moved again Dockerfile to docker subdirectory

docker/Dockerfile

@@ -0,0 +1,37 @@
+# Build a docker image from latest YaCy sources
+
+# Base image : latest stable Debian 
+FROM debian:latest
+
+# Install needed packages
+RUN apt-get update && apt-get install -yq \
+	default-jdk \
+	ant \
+	git
+	
+# set current working dir
+WORKDIR /opt
+
+# clone main YaCy git repository (we need to clone git repository to generate correct version when building from source)
+RUN git clone https://github.com/yacy/yacy_search_server.git
+
+# trace content of source directory
+RUN ls -la /opt/yacy_search_server
+
+# set current working dir
+WORKDIR /opt/yacy_search_server
+	
+# Compile with ant
+RUN ant compile
+
+# make some cleaning to reduce image size
+RUN rm -rf .git && apt-get clean
+
+# Expose port 8090
+EXPOSE 8090
+
+# Set data volume : can be used to persist yacy data and configuration
+VOLUME ["/opt/yacy_search_server/DATA"]
+
+# Start yacy ind debug mode (-d) to display console logs and to wait for yacy process
+CMD sh /opt/yacy_search_server/startYACY.sh -d