Initial implementation with alpine image for cert auth

Dockerfile

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+FROM alpine:3.21 AS builder
+
+RUN apk update && apk add --no-cache git libevent-dev autoconf automake build-base linux-headers
+
+RUN mkdir -p /ocproxy-container
+
+WORKDIR /ocproxy-container
+RUN git clone --branch v1.60 https://github.com/cernekee/ocproxy.git ocproxy-v1.60 && \
+    cd /ocproxy-container/ocproxy-v1.60 && \
+    sh autogen.sh && \
+    sh configure && \
+    make
+
+FROM alpine:3.21
+
+RUN apk update && apk add --no-cache openconnect libevent
+
+ARG USER=ocproxy
+
+RUN addgroup -S "$USER" && \
+    adduser --disabled-password \
+    --gecos "" \
+    --ingroup "$USER" \
+    --no-create-home \
+    --uid "12345" \
+    "$USER"
+
+RUN mkdir -p /ocproxy-container
+
+WORKDIR /ocproxy-container
+
+COPY --from=builder /ocproxy-container/ocproxy-v1.60/ocproxy /usr/local/bin/
+
+COPY ./entrypoint.sh .
+
+USER $USER
+
+EXPOSE 11080
+
+ENTRYPOINT ["/ocproxy-container/entrypoint.sh"]
+