Remove the confusion around the multiple Dockerfile(s) we have (netda…

…ta#8214)

* Remove the confusion around the multiple Dockerfile(s) we have

* Add comment at the top of Dockerfile.test to unconfuse users

* Adde cmake to build deps for Dockerfile.test

Dockerfile

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+./packaging/docker/Dockerfile

Dockerfile.test

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+# NOTE: This Dockerfile (`Dockerfile.test`) should only be used for dev/testing
+#       and *NOT* in production. Use the top-level `Dockerfile` which points to
+#       `./packaging/docker/Dockerfile`.
+#
+# TODO: Create a netdata/package-builder:alpine9
+#FROM netdata/package-buidler:alpine AS build
+FROM alpine:3.9 AS build
+
+# Install Dependencies
+RUN apk add --no-cache -U alpine-sdk bash curl libuv-dev zlib-dev \
+                          util-linux-dev libmnl-dev gcc make git autoconf \
+                          automake pkgconfig python logrotate openssl-dev \
+			  cmake
+
+# Pass optional ./netdata-installer.sh args with --build-arg INSTALLER_ARGS=...
+ARG INSTALLER_ARGS=""
+
+# Copy Sources
+# Can also bind-mount sources with:
+# $ docker run -v $PWD:/netdata
+
+WORKDIR /netdata
+COPY . .
+
+# Build
+RUN ./netdata-installer.sh --dont-wait --dont-start-it --disable-go "${INSTALLER_ARGS}"
+
+FROM alpine:3.9 AS runtime
+
+# Install runtime dependeices
+RUN apk --no-cache -U add curl bash libuv zlib util-linux libmnl python
+
+# Create netdata user/group
+RUN addgroup -S netdata && \
+	adduser -D -S -h /var/empty -s /bin/false -G netdata netdata
+
+# Copy binary from build layer
+COPY --from=build /usr/sbin/netdata /usr/sbin/netdata
+
+# Copy configuration files from build layer
+COPY --from=build /etc/netdata/ /etc/netdata/
+COPY --from=build /usr/lib/netdata/ /usr/lib/netdata/
+
+# Copy assets from build layer
+COPY --from=build /usr/share/netdata/ /usr/share/netdata/
+
+# Create some directories netdata needs
+RUN mkdir -p \
+	/etc/netdata \
+	/var/log/netdata \
+	/var/lib/netdata \
+	/var/cache/netdata \
+	/usr/lib/netdata/conf.d \
+	/usr/libexec/netdata/plugins.d
+
+# Fix permissions/ownerships
+RUN chown -R netdata:netdata \
+	/etc/netdata/ \
+	/usr/lib/netdata/ \
+	/usr/share/netdata/ \
+	/var/log/netdata \
+	/var/lib/netdata \
+	/var/cache/netdata  \
+	/usr/libexec/netdata
+
+VOLUME /etc/netdata
+VOLUME /var/lib/netdata
+VOLUME /var/log/netdata
+
+EXPOSE 19999/tcp
+
+USER netdata
+
+CMD ["/usr/sbin/netdata", "-D"]