init

Dockerfile

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+FROM alpine:3.17.0
+RUN apk add --no-cache curl libqrencode
+RUN tag="$(curl -sSo /dev/null -w '%{redirect_url}' \
+    https://github.com/Snawoot/dumbproxy/releases/latest | \
+    cut -d '/' -f 8)"; \
+    curl -sSL -o /usr/bin/dumbproxy \
+        https://github.com/Snawoot/dumbproxy/releases/download/$tag/dumbproxy.linux-amd64
+COPY entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+RUN chmod +x /usr/bin/dumbproxy /usr/local/bin/docker-entrypoint.sh
+
+ENV ADDRESS="${ADDRESS:-:8080}"
+ENV AUTH=
+ENV USERNAME=
+ENV PASSWORD=
+ENV HIDDEN_DOMAIN=
+ENV OPTIONS=
+
+USER nobody
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
+EXPOSE 8080
+STOPSIGNAL SIGINT
+CMD ["/usr/bin/dumbproxy"]

README.md

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+# HTTP(S) proxy dumbproxy image
+
+Motivation — the [original dumbproxy](https://hub.docker.com/r/yarmak/dumbproxy)
+image  [doesn't have](https://github.com/Snawoot/dumbproxy/blob/master/Dockerfile)
+any configuration options.
+
+## Build
+
+```shell
+docker build -t nxhs/dumbproxy:latest -t nxhs/dumbproxy:1.7.0 .
+```
+
+## Run
+
+```shell
+docker run -d \
+    --restart always \
+    --security-opt no-new-privileges \
+    -p 8080:8080 \
+    -e USERNAME=myuser \
+    -e PASSWORD=secure_password \
+    --name dumbproxy \
+    nxhs/dumbproxy:latest
+```
+
+## Environment
+
+| Variable      | Description                                                                       |
+| ------------- | --------------------------------------------------------------------------------- |
+| `ADDRESS`     | Argument for `-bind-address`. HTTP proxy listen address (default ":8080")         |
+| `AUTH`        | Argument for [-auth option](https://github.com/Snawoot/dumbproxy#authentication)  |
+| `USERNAME`    | Username for `-auth` option with `static` scheme                                  |
+| `PASSWORD`    | Password for `-auth` option with `static` scheme                                  |
+| `HIDDEN_DOMAIN`   | See [Authentication](https://github.com/Snawoot/dumbproxy#authentication)     |
+| `OPTIONS`     | Any [options](https://github.com/Snawoot/dumbproxy#synopsis) what you want        |

entrypoint.sh

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+#!/bin/sh
+
+set -o errexit
+
+if [ "$1" = "/usr/bin/dumbproxy" ]; then
+    if [ -n "$AUTH" ]; then
+        ARGS="-bind-address $ADDRESS -auth $AUTH $OPTIONS"
+    elif [ -n "$USERNAME" ] && [ -n "$PASSWORD" ]; then
+        if [ -n "$HIDDEN_DOMAIN" ]; then
+            AUTH="static://?username=$USERNAME&password=$PASSWORD&hidden_domain=$HIDDEN_DOMAIN"
+        else
+            AUTH="static://?username=$USERNAME&password=$PASSWORD"
+        fi
+        ARGS="-bind-address $ADDRESS -auth $AUTH $OPTIONS"
+    else
+        ARGS="-bind-address $ADDRESS $OPTIONS"
+    fi
+fi
+
+# shellcheck disable=SC2086
+exec "$@" $ARGS