Adapt Dockerfile for development (#237)

* Adapt Dockerfile for development

The Dockerfile for release using Alpine is in the included Dockerfile.release and this one was not used for release so doesn't make sense to have it using multistage nor Alpine.

Dockerfile

@@ -1,29 +1,17 @@
-# Build Geth in a stock Go builder container
+FROM golang:latest
-FROM golang:1.17-alpine as builder
 
-RUN set -x \
+ARG BOR_DIR=/bor
-	&& buildDeps='bash build-base musl-dev linux-headers git' \
+ENV BOR_DIR=$BOR_DIR
-	&& apk add --update $buildDeps \
+
-	&& rm -rf /var/cache/apk/* \
+RUN apt-get update -y && apt-get upgrade -y \
+    && apt install build-essential git tini -y \
     && mkdir -p /bor
 
-WORKDIR /bor
+WORKDIR ${BOR_DIR}
 COPY . .
 RUN make bor-all
 
-CMD ["/bin/bash"]
+ENV SHELL /bin/bash
-
-# Pull Bor into a second stage deploy alpine container
-FROM alpine:3.14
-
-RUN set -x \
-    && apk add --update --no-cache \
-       ca-certificates \
-    && rm -rf /var/cache/apk/*
-
-COPY --from=builder /bor/build/bin/bor /usr/local/bin/
-COPY --from=builder /bor/build/bin/bootnode /usr/local/bin/
-
 EXPOSE 8545 8546 8547 30303 30303/udp
 
 ENTRYPOINT ["bor"]