update: change image golang:1.20 to golang:1.20-alpine3.19

Dockerfile

@@ -1,15 +1,23 @@
-FROM golang:1.20
+FROM golang:1.20-alpine3.19
 
 LABEL creator="qywok"
 
-WORKDIR /app
+ENV APP_DIR=/tebakaja_proxy \
+    GO111MODULE=on \
+    CGO_ENABLED=0
+
+WORKDIR ${APP_DIR}
 
 COPY go.mod go.sum ./
 RUN go mod download
 
 COPY . .
 
-RUN go build -o main
+RUN go build -o main . && \
+    go clean -modcache && \
+    rm -rf /var/cache/apk/* /root/.cache/go-build /root/go/pkg && \
+    find . -type f ! -name 'main' ! -name '.env' -delete && \
+    find . -type d -empty -not -path './docs' -delete
 
 EXPOSE 7860