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"]
+

README.md

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+# ocprocy container
+
+```bash
+podman run -d \
+    -p 11080:11080 \
+    -e OPENCONNECT_OPTIONS="" \
+    -e OPENCONNECT_URL="" \
+    -e OPENCONNECT_CERT_PATH="/ocproxy-container/cert.p12" \
+    -e OPENCONNECT_CERT_PASSWD="" \
+    -v ./cert.p12:/ocproxy-container/cert.p12:Z \
+    --name "ocproxy" \
+    git.dm1sh.ru/dm1sh/ocproxy-container:latest
+```
+
+```bash
+podman pod create --name "proxied-pod"
+
+podman container create \
+    --pod "proxied-pod"
+    -e OPENCONNECT_OPTIONS="" \
+    -e OPENCONNECT_URL="" \
+    -e OPENCONNECT_CERT_PATH="/ocproxy-container/cert.p12" \
+    -e OPENCONNECT_CERT_PASSWD="" \
+    -v ./cert.p12:/ocproxy-container/cert.p12:Z \
+    --name "proxied-pod-ocproxy" \
+    git.dm1sh.ru/dm1sh/ocproxy-container:latest
+
+podman container create \
+    --pod "proxied-pod" \
+    ...
+```
+
+## Environment variables
+
+- `OPENCONNECT_OPTIONS` - additional options for openconnect command
+- `OPENCONNECT_URL` - URL of openconnect server
+- `OPENCONNECT_CERT_PATH` - path to user certificate in container
+- `OPENCONNECT_CERT_PASSWD` - password for user certificate

entrypoint.sh

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+#!/bin/sh
+
+REQUIRED_VARS="OPENCONNECT_URL OPENCONNECT_CERT_PATH OPENCONNECT_CERT_PASSWD"
+
+for VAR in $REQUIRED_VARS; do
+    eval "VALUE=\${$VAR}"
+    if [ -z "$VALUE" ]; then
+        echo "Error: ENV $VAR is not set. Please check your environment."
+        exit 1
+    fi
+done
+
+openconnect --non-inter --verbose --timestamp --reconnect-timeout=600 --script-tun --script "ocproxy -g -k 60 -D 11080" ${OPENCONNECT_OPTIONS} ${OPENCONNECT_URL} -c ${OPENCONNECT_CERT_PATH} -p ${OPENCONNECT_CERT_PASSWD}