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Merged
SumedhSankhe merged 1 commit into from
Dec 20, 2025
Merged

update #5

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28 changes: 16 additions & 12 deletions Dockerfile.multistage
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,11 @@
# ============================================================================
# STAGE 1: Builder - Install dependencies
# ============================================================================
FROM rocker/r-ver:4.4.3 AS builder
FROM rocker/r2u:24.04 AS builder

# Configure renv cache to use the same path as runtime
# This ensures symlinks remain valid when copied to runtime stage
ENV RENV_PATHS_CACHE="/app/renv/.cache"

# Install system dependencies needed for package compilation
RUN apt-get update && apt-get install -y \
Expand All @@ -28,7 +32,7 @@ RUN apt-get update && apt-get install -y \
libjpeg-dev \
&& rm -rf /var/lib/apt/lists/*

WORKDIR /build
WORKDIR /app

# OPTIMIZATION 1: Copy only dependency files first
# This creates a cache-friendly layer that only rebuilds when dependencies change
Expand All @@ -49,7 +53,10 @@ COPY app.R app.R
# ============================================================================
# STAGE 2: Runtime - Minimal production image
# ============================================================================
FROM rocker/r-ver:4.4.3
FROM rocker/r2u:24.04

# Configure renv cache location to match where packages were installed
ENV RENV_PATHS_CACHE="/app/renv/.cache"

# Install ONLY runtime system dependencies (no build tools)
# Note: Using minimal runtime libraries without -dev packages
Expand All @@ -68,24 +75,21 @@ RUN apt-get update && apt-get install -y --no-install-recommends \

WORKDIR /app

# Copy the entire renv library from builder stage
COPY --from=builder /build/renv /app/renv
COPY --from=builder /build/.Rprofile /app/.Rprofile
COPY --from=builder /build/renv.lock /app/renv.lock

# Copy the renv cache (symlinks in renv/library point to this cache)
COPY --from=builder /root/.cache/R/renv /root/.cache/R/renv
# Copy the entire renv library from builder stage (includes cache at /app/renv/.cache)
COPY --from=builder /app/renv /app/renv
COPY --from=builder /app/.Rprofile /app/.Rprofile
COPY --from=builder /app/renv.lock /app/renv.lock

# Copy application code
COPY --from=builder /build/app.R /app/app.R
COPY --from=builder /app/app.R /app/app.R

# Expose Shiny port
EXPOSE 3838

# Run the application
# Note: Use --vanilla to skip .Rprofile and avoid renv activation at runtime
# The renv library path is already in R's search path
CMD ["R", "--vanilla", "-e", ".libPaths('/app/renv/library/linux-ubuntu-noble/R-4.4/x86_64-pc-linux-gnu'); shiny::runApp('/app', host = '0.0.0.0', port = 3838)"]
CMD ["R", "--vanilla", "-e", ".libPaths('/app/renv/library/linux-ubuntu-noble/R-4.5/x86_64-pc-linux-gnu'); shiny::runApp('/app', host = '0.0.0.0', port = 3838)"]

# ============================================================================
# Build and Run Commands:
Expand Down
7 changes: 5 additions & 2 deletions Dockerfile.single-stage
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Expand Up @@ -8,7 +8,10 @@
# 4. Larger final image size (~2GB+)
# ============================================================================

FROM rocker/r-ver:4.4.3
FROM rocker/r2u:24.04

# Configure renv cache to be inside the app directory
ENV RENV_PATHS_CACHE="/app/renv/.cache"

# Install system dependencies
RUN apt-get update && apt-get install -y \
Expand Down Expand Up @@ -41,4 +44,4 @@ EXPOSE 3838
# Run the application
# Note: Use --vanilla to skip .Rprofile and avoid renv activation at runtime
# The renv library path is already in R's search path
CMD ["R", "--vanilla", "-e", ".libPaths('/app/renv/library/linux-ubuntu-noble/R-4.4/x86_64-pc-linux-gnu'); shiny::runApp('/app', host = '0.0.0.0', port = 3838)"]
CMD ["R", "--vanilla", "-e", ".libPaths('/app/renv/library/linux-ubuntu-noble/R-4.5/x86_64-pc-linux-gnu'); shiny::runApp('/app', host = '0.0.0.0', port = 3838)"]
26 changes: 15 additions & 11 deletions Dockerfile.three-stage
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,11 @@
# ============================================================================
# STAGE 1: Base - CRAN packages and build environment
# ============================================================================
FROM rocker/r-ver:4.4.3 AS base
FROM rocker/r2u:24.04 AS base

# Configure renv cache to use the same path as runtime
# This ensures symlinks remain valid when copied to runtime stage
ENV RENV_PATHS_CACHE="/app/renv/.cache"

# Install system dependencies needed for compilation AND runtime
# Build tools are needed here to compile CRAN packages
Expand All @@ -35,7 +39,7 @@ RUN apt-get update && apt-get install -y \
libjpeg-dev \
&& rm -rf /var/lib/apt/lists/*

WORKDIR /base
WORKDIR /app

# OPTIMIZATION 1: Copy only dependency files first
# This creates a cache-friendly layer that only rebuilds when CRAN dependencies change
Expand Down Expand Up @@ -84,7 +88,10 @@ COPY app.R app.R
# ============================================================================
# STAGE 3: Runtime - Pure application (NO build tools)
# ============================================================================
FROM rocker/r-ver:4.4.3
FROM rocker/r2u:24.04

# Configure renv cache location to match where packages were installed
ENV RENV_PATHS_CACHE="/app/renv/.cache"

# Install ONLY runtime system dependencies (no -dev packages, no build tools)
# Note: Using minimal runtime libraries without -dev packages
Expand All @@ -103,13 +110,10 @@ RUN apt-get update && apt-get install -y --no-install-recommends \

WORKDIR /app

# Copy CRAN packages from base stage
COPY --from=base /base/renv /app/renv
COPY --from=base /base/.Rprofile /app/.Rprofile
COPY --from=base /base/renv.lock /app/renv.lock

# Copy the renv cache (symlinks in renv/library point to this cache)
COPY --from=base /root/.cache/R/renv /root/.cache/R/renv
# Copy CRAN packages from base stage (includes cache at /app/renv/.cache)
COPY --from=base /app/renv /app/renv
COPY --from=base /app/.Rprofile /app/.Rprofile
COPY --from=base /app/renv.lock /app/renv.lock

# Copy custom packages from builder stage (if any were installed)
# COPY --from=builder /usr/local/lib/R/site-library/mypackage /usr/local/lib/R/site-library/mypackage
Expand All @@ -123,7 +127,7 @@ EXPOSE 3838
# Run the application
# Note: Use --vanilla to skip .Rprofile and avoid renv activation at runtime
# The renv library path is already in R's search path
CMD ["R", "--vanilla", "-e", ".libPaths('/app/renv/library/linux-ubuntu-noble/R-4.4/x86_64-pc-linux-gnu'); shiny::runApp('/app', host = '0.0.0.0', port = 3838)"]
CMD ["R", "--vanilla", "-e", ".libPaths('/app/renv/library/linux-ubuntu-noble/R-4.5/x86_64-pc-linux-gnu'); shiny::runApp('/app', host = '0.0.0.0', port = 3838)"]

# ============================================================================
# Layer Optimization Strategy:
Expand Down
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