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Dockerfile
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Dockerfile
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# Dockerfile References: https://docs.docker.com/engine/reference/builder/
# Start from golang:1.12-alpine base image
FROM golang:1.17-alpine
# The latest alpine images don't have some tools like (`git` and `bash`).
# Adding git, bash and openssh to the image
RUN apk update && apk upgrade && \
apk add --no-cache build-base gcc bash git openssh
# Add Maintainer Info
LABEL maintainer="bigben"
# Set the Current Working Directory inside the container
WORKDIR /app
# Copy go mod and sum files
COPY go.mod go.sum ./
# Download all dependancies. Dependencies will be cached if the go.mod and go.sum files are not changed
RUN go mod download
# Copy the source from the current directory to the Working Directory inside the container
COPY . .
# Build the Go app
RUN go build -o main .
# Expose port 3000 to the outside world
EXPOSE 3000
# Run the executable
CMD ["./main", "serve"]