# Dockerfile References: https://docs.docker.com/engine/reference/builder/

# Start from the latest golang base image
FROM golang:1.13

# Add Maintainer Info
LABEL maintainer="Anis Benz"

# Set the Current Working Directory inside the container
WORKDIR /bot

# Build Args
ARG LOG_DIR=/bot/logs

# Create Log Directory
RUN mkdir -p ${LOG_DIR}

# Environment Variables
ENV LOG_FILE_LOCATION=${LOG_DIR}/bot.log 

# Copy go mod and sum files
COPY go.mod go.sum ./

# Download all dependencies. 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 . .

# Expose port 8080 to the outside world
EXPOSE 8080

# Declare volumes to mount
VOLUME [${LOG_DIR}]

# Build the Go app
RUN go build -o main .

# Command to run the executable
CMD ["./main"]