Add Dockerfile.debug

Author: ryanbrainard

Dockerfile.debug

@@ -0,0 +1,31 @@
+FROM golang as builder
+
+# Build Delve debugger
+RUN go get github.com/go-delve/delve/cmd/dlv
+
+# Build shass in debug mode
+WORKDIR $GOPATH/src/github.com/heroku/shaas
+ADD . $GOPATH/src/github.com/heroku/shaas
+ENV CGO_ENABLED=0 GOOS=linux GOARCH=amd64
+RUN go install -gcflags="all=-N -l"
+
+FROM ubuntu
+
+RUN apt-get update && apt-get install -y bash && apt-get install -y curl
+RUN groupadd -g 1000 app
+RUN useradd -s /bin/bash -u 1000 -g 1000 -d /app app
+RUN mkdir -p /app && chown app:app /app
+
+USER app
+WORKDIR /app
+
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=builder /go/bin/dlv .
+COPY --from=builder /go/bin/shaas .
+COPY --from=builder /go/src/github.com/heroku/shaas/bin/pseudo-interactive-bash /app/bin/pseudo-interactive-bash
+
+EXPOSE 40000 # delve
+EXPOSE 5000  # shaas
+
+# Start delve, which starts shaas after remote debugger connects
+CMD ["/app/dlv", "--listen=:40000", "--headless=true", "--api-version=2", "--accept-multiclient", "exec", "/app/shaas"]