Environment variables not picked up when using docker to build project

# Use a Node.js base image
FROM node:21-alpine

# Install ffmpeg
RUN apk update && apk add --no-cache ffmpeg curl openrc

# Install Tailscale
RUN curl -fsSL https://tailscale.com/install.sh | sh

# Set the working directory inside the container
WORKDIR /app

# Copy the project files to the container's working directory
COPY . .

# Install Node.js dependencies
RUN yarn install

# Your custom build command
RUN npx prisma db push --schema=src/lib/prisma/schema.prisma && npx prisma generate --schema=src/lib/prisma/schema.prisma && yarn build

# Make the start script executable
RUN chmod +x start.sh

# Start Tailscale and your application via the start script
CMD ["./start.sh"]

# Use a Node.js base image
FROM node:21-alpine

# Install ffmpeg
RUN apk update && apk add --no-cache ffmpeg curl openrc

# Install Tailscale
RUN curl -fsSL https://tailscale.com/install.sh | sh

# Set the working directory inside the container
WORKDIR /app

# Copy the project files to the container's working directory
COPY . .

# Install Node.js dependencies
RUN yarn install

# Your custom build command
RUN npx prisma db push --schema=src/lib/prisma/schema.prisma && npx prisma generate --schema=src/lib/prisma/schema.prisma && yarn build

# Make the start script executable
RUN chmod +x start.sh

# Start Tailscale and your application via the start script
CMD ["./start.sh"]

#11 [7/8] RUN npx prisma db push --schema=src/lib/prisma/schema.prisma && npx prisma generate --schema=src/lib/prisma/schema.prisma && yarn build

 

#11 1.922 Prisma schema loaded from src/lib/prisma/schema.prisma

 

#11 1.929 Datasource "db": PostgreSQL database

#11 1.932

 

#11 1.932 Error: Prisma schema validation - (get-config wasm)

#11 1.932 Error code: P1012

#11 1.932 error: Environment variable not found: DATABASE_URL.

#11 1.932   -->  schema.prisma:7

#11 1.932    |

#11 1.932  6 |   provider = "postgresql"

#11 1.932  7 |   url      = env("DATABASE_URL")

#11 1.932    |

#11 1.932

#11 [7/8] RUN npx prisma db push --schema=src/lib/prisma/schema.prisma && npx prisma generate --schema=src/lib/prisma/schema.prisma && yarn build

 

#11 1.922 Prisma schema loaded from src/lib/prisma/schema.prisma

 

#11 1.929 Datasource "db": PostgreSQL database

#11 1.932

 

#11 1.932 Error: Prisma schema validation - (get-config wasm)

#11 1.932 Error code: P1012

#11 1.932 error: Environment variable not found: DATABASE_URL.

#11 1.932   -->  schema.prisma:7

#11 1.932    |

#11 1.932  6 |   provider = "postgresql"

#11 1.932  7 |   url      = env("DATABASE_URL")

#11 1.932    |

#11 1.932