added Dockerfile

Dockerfile

@@ -0,0 +1,22 @@
+FROM debian:9.4-slim
+LABEL maintainer [email protected]
+
+RUN \
+    cd ~ && \
+    apt-get update -qq && \
+    apt-get install -qqy \
+        git-core build-essential wget curl && \
+        wget https://dl.google.com/go/go1.10.3.linux-amd64.tar.gz && \
+        tar xvf go1.10.3.linux-amd64.tar.gz && \
+        mv go /usr/local/ && \
+        export GOROOT=/usr/local/go && \
+        export GOBIN=/usr/local/bin && \
+        export GOPATH=$HOME/Projects && \
+        export PATH=$GOPATH/bin:$GOROOT/bin:$PATH && \
+    rm -rf /var/lib/apt/lists/* && \
+    go env GOPATH && \
+    go get -u github.com/mna/pigeon && \
+    git clone https://github.com/nearform/gammaray $GOPATH/src/github.com/nearform/gammaray && \
+    curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh && \
+    cd $GOPATH/src/github.com/nearform/gammaray && make && \
+    mv gammaray /usr/bin/