Fix building vdr-proxy docker img

Signed-off-by: Patrik Stas <patrik.stas@absa.africa>

ci/vdrproxy.dockerfile

@@ -1,5 +1,28 @@
-ARG ALPINE_CORE_IMAGE
-FROM ${ALPINE_CORE_IMAGE} AS builder
+FROM alpine:3.17.1 AS builder
+
+ARG UID=1000
+ARG GID=1000
+
+RUN addgroup -g $GID indy && adduser -u $UID -D -G indy indy
+
+# zeromq-dev depends on libsodium-dev and pkg-config
+
+RUN apk update && apk upgrade && \
+    apk add --no-cache \
+        build-base \
+        curl \
+        openssl-dev \
+        zeromq-dev \
+        cmake
+
+USER indy
+WORKDIR /home/indy
+
+ARG RUST_VER="1.65.0"
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $RUST_VER --default-host x86_64-unknown-linux-musl
+
+ENV PATH="/home/indy/.cargo/bin:$PATH"
+ENV RUST_LOG=warning RUSTFLAGS="-C target-feature=-crt-static"
 
 USER root
 RUN apk update && apk upgrade && \