fix: wireguard-go build

Author: cheina97

build/liqo/Dockerfile

@@ -4,15 +4,29 @@ FROM alpine:3.20
 ARG COMPONENT
 ARG TARGETARCH
 
+RUN if [ "$COMPONENT" = "geneve" ] || [ "$COMPONENT" = "wireguard" ] || [ "$COMPONENT" = "gateway" ]; then \
+    set -x; \
+    apk add --no-cache iproute2 nftables bash wireguard-tools tcpdump conntrack-tools curl iputils; \
+    fi
+
+RUN if [ "$COMPONENT" = "wireguard" ]; then \
+    set -e; \
+    apk add --no-cache git curl; \
+    GO_VERSION=1.22.4; \
+    curl -L https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz | tar -C /usr/local -xz; \
+    export PATH="/usr/local/go/bin:$PATH"; \
+    git clone https://git.zx2c4.com/wireguard-go; cd wireguard-go; git checkout f333402bd9cbe0f3eeb02507bd14e23d7d639280; \
+    CGO_ENABLED=0 GOOS=linux GOARCH=$(go env GOARCH) /usr/local/go/bin/go build -ldflags="-s -w" -o /usr/bin/wireguard-go; \
+    cd .. && rm -rf wireguard-go; \
+    rm -rf /usr/local/go; \
+    apk del git curl; \
+    fi
+
 # Copy the correct binary for the architecture
 COPY ./bin/${TARGETARCH}/${COMPONENT}_linux_${TARGETARCH} /usr/bin/${COMPONENT}
 RUN chmod +x /usr/bin/${COMPONENT}
 RUN ln -s /usr/bin/${COMPONENT} /usr/bin/liqo-component
 
-RUN if [ "$COMPONENT" = "geneve" ] || [ "$COMPONENT" = "wireguard" ] || [ "$COMPONENT" = "gateway" ]; then \
-    apk add --no-cache iproute2 nftables bash wireguard-tools tcpdump conntrack-tools curl iputils; \
-    fi
-
 WORKDIR /workspace
 
 ENTRYPOINT ["/usr/bin/liqo-component"]