Add turncat

Dockerfile

@@ -1,3 +1,22 @@
+###########
+# BUILD
+# Build turncat
+FROM golang:1.19-alpine as builder
+
+WORKDIR /app
+RUN apk add --no-cache git tar wget upx
+RUN wget https://github.com/l7mp/stunner/archive/refs/tags/v0.15.0.tar.gz -O stunner.tar.gz \
+    && tar --strip-components=1 -zxf stunner.tar.gz -C .
+RUN apkArch="$(apk --print-arch)"; \
+      case "$apkArch" in \
+        aarch64) export GOARCH='arm64' ;; \
+        *) export GOARCH='amd64' ;; \
+      esac; \
+    CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -trimpath -o turncat cmd/turncat/main.go
+RUN upx --lzma turncat
+
+####
+# NET-DEBUG
 FROM alpine:3.18
 
 RUN apk add --no-cache \
@@ -31,4 +50,6 @@ RUN curl -Lo /usr/bin/websocat \
 
 # RUN /usr/sbin/sysctl -w net.ipv4.ip_forward=0
 
+COPY --from=builder /app/turncat /usr/bin/
+
 CMD exec /bin/bash -c "trap : TERM INT; sleep infinity & wait"