use separate goreleaser config file to generate docker images based on alpine

.github/workflows/push.yml

@@ -1,7 +1,7 @@
 name: 'snapshot'
-on: [push, pull_request]
+on: [ push, pull_request ]
 jobs:
-  snapshot:
+  pkg:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/setup-go@v1
@@ -17,8 +17,22 @@ jobs:
     - run: go get ./...
     - run: golangci-lint run -v
     - run: goreleaser --snapshot --skip-publish --rm-dist
+    - uses: actions/upload-artifact@master
+      with:
+        name: ubuntu
+        path: dist
+
+  docker:
+    needs: [ pkg ]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/setup-go@v1
+      with:
+        go-version: '1.13.x'
+    - uses: actions/checkout@v1
+    - run: ./docker.sh
     - run: docker images
     - uses: actions/upload-artifact@master
       with:
-        name: dist
+        name: alpine
         path: dist

.goreleaser.docker.yml

@@ -0,0 +1,25 @@
+release:
+  prerelease: true
+
+builds:
+  - binary: dive
+    goos:
+      - linux
+    goarch:
+      - amd64
+    ldflags: -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X main.buildTime={{.Date}}`.
+
+dockers:
+  -
+    binaries:
+      - dive
+    dockerfile: Dockerfile
+    image_templates:
+      - "wagoodman/dive:{{ .Tag }}"
+      - "wagoodman/dive:v{{ .Major }}"
+      - "wagoodman/dive:v{{ .Major }}.{{ .Minor }}"
+      - "wagoodman/dive:latest"
+      - "quay.io/wagoodman/dive:{{ .Tag }}"
+      - "quay.io/wagoodman/dive:v{{ .Major }}"
+      - "quay.io/wagoodman/dive:v{{ .Major }}.{{ .Minor }}"
+      - "quay.io/wagoodman/dive:latest"

.goreleaser.yml

@@ -11,21 +11,6 @@ builds:
       - amd64
     ldflags: -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X main.buildTime={{.Date}}`.
 
-dockers:
-  -
-    binaries:
-      - dive
-    dockerfile: Dockerfile
-    image_templates:
-    - "wagoodman/dive:{{ .Tag }}"
-    - "wagoodman/dive:v{{ .Major }}"
-    - "wagoodman/dive:v{{ .Major }}.{{ .Minor }}"
-    - "wagoodman/dive:latest"
-    - "quay.io/wagoodman/dive:{{ .Tag }}"
-    - "quay.io/wagoodman/dive:v{{ .Major }}"
-    - "quay.io/wagoodman/dive:v{{ .Major }}.{{ .Minor }}"
-    - "quay.io/wagoodman/dive:latest"
-
 archives:
   - format: tar.gz
     format_overrides:

Dockerfile

@@ -1,12 +1,5 @@
-FROM debian:sid-slim
+FROM alpine:3.10
-RUN apt-get update && apt-get install -y \
+COPY --from=wagoodman/dive:dev /usr/local/bin/docker /usr/local/bin/
-        curl \
-        libdevmapper1.02.1 \
-        libgpgme11-dev \
-     && rm -rf /var/lib/apt/lists/* \
-     && ln -s /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 /usr/lib/libdevmapper.so.1.02
-ARG DOCKER_CLI_VERSION="19.03.1"
-RUN curl -L https://download.docker.com/linux/static/stable/x86_64/docker-$DOCKER_CLI_VERSION.tgz | \
-    tar -xz  --strip-component=1 -C /usr/local/bin/ docker/docker
 COPY dive /usr/local/bin/
+RUN apk add -U --no-cache gpgme device-mapper
 ENTRYPOINT ["/usr/local/bin/dive"]

docker.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env sh
+
+set -e
+
+cd "$(dirname $0)"
+
+docker build -t wagoodman/dive:dev - <<EOF
+FROM golang:alpine AS build
+RUN apk add -U --no-cache gpgme-dev gcc musl-dev btrfs-progs-dev lvm2-dev curl git \
+ && curl -sfL https://install.goreleaser.com/github.com/goreleaser/goreleaser.sh | sh \
+ && curl -L https://download.docker.com/linux/static/stable/x86_64/docker-19.03.1.tgz | tar -xzf - docker/docker --strip-component=1 -C /usr/local/bin
+EOF
+
+docker run --rm \
+  -v //var/run/docker.sock://var/run/docker.sock \
+  -v /$(pwd)://src \
+  -w //src \
+  wagoodman/dive:dev \
+  goreleaser \
+    -f .goreleaser.docker.yml \
+    --snapshot \
+    --skip-publish \
+    --rm-dist
+
+sudo chown -R $USER:$USER dist