Add mips build target (compressed with upx).

The binary for MIPS will be compressed using UPX since most MIPS devices
have limited memory available.

Closes #65.

Author: brocaar

.goreleaser.yml

@@ -1,5 +1,8 @@
 project_name: chirpstack-gateway-bridge
 
+env:
+  - GOMIPS=softfloat
+
 builds:
   - main: cmd/chirpstack-gateway-bridge/main.go
     binary: chirpstack-gateway-bridge
@@ -12,13 +15,16 @@ builds:
       - 386
       - arm
       - arm64
+      - mips
     goarm:
       - 5
       - 6
       - 7
     ignore:
       - goos: darwin
         goarch: 386
+    hooks:
+      post: ./packaging/scripts/compress-mips.sh
 
 release:
   disable: true

Dockerfile-devel

@@ -5,7 +5,7 @@ ENV PATH=$PATH:$PROJECT_PATH/build
 ENV CGO_ENABLED=0
 ENV GO_EXTRA_BUILD_ARGS="-a -installsuffix cgo"
 
-RUN apk add --no-cache ca-certificates make git bash
+RUN apk add --no-cache ca-certificates make git bash upx
 
 RUN mkdir -p $PROJECT_PATH
 COPY . $PROJECT_PATH

packaging/scripts/compress-mips.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+echo "Compressing MIPS binary"
+upx dist/linux_mips/chirpstack-gateway-bridge