Dockerfile

FROM golang:1.16.2-alpine3.13 AS build_base

RUN apk add --no-cache git

# Set the Current Working Directory inside the container
WORKDIR /tmp/app

# We want to populate the module cache based on the go.{mod,sum} files.
COPY go.mod .
COPY go.sum .

RUN go mod download
RUN go get -u github.com/gobuffalo/packr/v2/packr2

COPY . .

# Build the Go app
RUN packr2
RUN apk add pkgconfig imagemagick-dev build-base
RUN go build -o seventv

# Start fresh from a smaller image
FROM alpine
ENV MAGICK_HOME=/usr
RUN apk update && apk add ca-certificates pkgconfig imagemagick libwebp-tools libwebp-dev libpng-dev jpeg-dev giflib-dev

WORKDIR /app

COPY --from=build_base /tmp/app/seventv /app/seventv

# Run the binary program produced by `go install`
CMD ["/app/seventv"]