Docker: Improve Published Docker Images (envoyproxy#2850)

This is an initial update to the docker images that are created
and published to hub.dockerhub.com.

The purpose is to provide users with an image that can be ready
to run from the moment they issue docker pull.

Signed-off-by: Nicholas Johns <[email protected]>

ci/Dockerfile-envoy-alpine

@@ -1,3 +1,17 @@
 FROM frolvlad/alpine-glibc
 
+ENV loglevel=info
+
+RUN apk upgrade --update-cache \
+    && apk add dumb-init \
+    && rm -rf /var/cache/apk/*
+
+RUN mkdir -p /etc/envoy
+
 ADD build_release_stripped/envoy /usr/local/bin/envoy
+ADD configs/google_com_proxy.v2.yaml /etc/envoy/envoy.yaml
+
+EXPOSE 10000
+
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+CMD /usr/local/bin/envoy --v2-config-only -l $loglevel -c /etc/envoy/envoy.yaml

ci/Dockerfile-envoy-alpine-debug

@@ -1,3 +1,17 @@
 FROM frolvlad/alpine-glibc
 
+ENV loglevel=info
+
+RUN apk upgrade --update-cache \
+    && apk add dumb-init \
+    && rm -rf /var/cache/apk/*
+
+RUN mkdir -p /etc/envoy
+
 ADD build_release/envoy /usr/local/bin/envoy
+ADD configs/google_com_proxy.v2.yaml /etc/envoy/envoy.yaml
+
+EXPOSE 10000
+
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+CMD /usr/local/bin/envoy --v2-config-only -l $loglevel -c /etc/envoy/envoy.yaml

ci/Dockerfile-envoy-image

@@ -1,3 +1,26 @@
 FROM ubuntu:16.04
 
+ARG dumbinit_version=1.2.1
+ENV loglevel=info
+
+RUN apt-get update \
+    && apt-get upgrade -y \
+    && apt-get install -y wget ca-certificates \
+    && apt-get autoremove -y \
+    && apt-get clean \
+    && rm -rf /tmp/* /var/tmp/* \
+    && rm -rf /var/lib/apt/lists/*
+
+
+RUN wget https://github.com/Yelp/dumb-init/releases/download/v${dumbinit_version}/dumb-init_${dumbinit_version}_amd64.deb \
+    && dpkg -i dumb-init_${dumbinit_version}_amd64.deb
+
+RUN mkdir -p /etc/envoy
+
 ADD build_release_stripped/envoy /usr/local/bin/envoy
+ADD configs/google_com_proxy.v2.yaml /etc/envoy/envoy.yaml
+
+EXPOSE 10000
+
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+CMD /usr/local/bin/envoy --v2-config-only -l $loglevel -c /etc/envoy/envoy.yaml