fix some issues with building alpine docker images

Author: TheKhanj

Dockerfile

@@ -3,12 +3,20 @@ WORKDIR /src
 COPY go.mod go.sum ./
 RUN go mod download
 RUN go install github.com/google/wire/cmd/wire@latest
-RUN apk update
-RUN apk add --no-cache make
+ARG APK_MIRROR
+RUN if [ -n "$APK_MIRROR" ]; then \
+        sed -i "s|https://dl-cdn.alpinelinux.org/alpine|$APK_MIRROR|g" /etc/apk/repositories; \
+    fi
+RUN apk update && apk add --no-cache make gcc musl-dev
 COPY . .
-RUN make
+RUN CGO_ENABLED=1 make
 
 FROM alpine
+ARG APK_MIRROR
+RUN if [ -n "$APK_MIRROR" ]; then \
+        sed -i "s|https://dl-cdn.alpinelinux.org/alpine|$APK_MIRROR|g" /etc/apk/repositories; \
+    fi
+RUN apk update && apk add --no-cache musl
 COPY --from=build /src/csdmpro /usr/local/bin/
 RUN mkdir /csdmpro
 WORKDIR /csdmpro

Makefile

@@ -1,3 +1,5 @@
+CGO_ENABLED ?= 0
+CC ?= gcc
 GO_FILES = $(shell find core -type f -name '*.go') \
 						$(shell find tg -type f -name '*.go') \
 						$(shell find db -type f -name '*.go') \
@@ -11,7 +13,7 @@ wire: $(GO_FILES) $(DEV_GO_FILES)
 	wire
 
 build: $(GO_FILES) $(DEV_GO_FILES) wire
-	go build
+	CGO_ENABLED=$(CGO_ENABLED) CC=$(CC) go build
 
 build_watch: $(GO_FILES)
 	printf "%s\n" $(GO_FILES) $(DEV_GO_FILES) | \