Stored cache is empty #33
Comments
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same here. |
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I cannot reproduce this, but there are a few reasons why this can happen:
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I'm also experiencing this issue. Some relevant code... Relevant parts of GitHub Actions Workflow: - run: docker context create builders
- uses: docker/setup-buildx-action@d70bba72b1f3fd22344832f00baa16ece964efeb # pin@v3.3.0
with:
endpoint: builders
- name: Ensure cache directories exists
run: |
mkdir -p ~/.nuget/packages
mkdir -p ~/dist
- name: 'Cache intermediate build artifacts'
id: cache
uses: actions/cache@13aacd865c20de90d75de3b17ebe84f7a17d57d2 # pin@v4
with:
path: |
~/.nuget/packages
~/dist
key: ${{ runner.os }}-intermediate-${{ matrix.project }}-${{ hashFiles('src/**/Directory.Packages.props') }}
- name: Show cache contents
run: |
ls -al ~/.nuget/packages
ls -al ~/dist
- name: inject cache into docker build
uses: reproducible-containers/buildkit-cache-dance@5b6db76d1da5c8b307d5d2e0706d266521b710de # v3.1.2
with:
cache-map: |
{
"~/.nuget/packages": {
"target": "/root/.nuget/packages",
"id": "nuget"
},
"~/dist": {
"target": "/dist",
"id": "dist"
}
}
skip-extraction: ${{ steps.cache.outputs.cache-hit }}
- name: Build and push
uses: docker/build-push-action@v6.7.0
with:
context: ./src
cache-from: type=gha
cache-to: type=gha,mode=max
file: src/Location/ZapMiddleware.Location.Api/Dockerfile
push: false
tags: testRelevant parts of Dockerfile: ###################################################
# Build image #
###################################################
FROM mcr.microsoft.com/dotnet/sdk:8.0.201-bookworm-slim AS build
WORKDIR /src
# Check cache mounts
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages ls -al /root/.nuget/packages
RUN --mount=type=cache,id=dist,target=/dist ls -al /dist
# Copy csproj and restore as distinct layers
COPY ["Location/ZapMiddleware.Location.Api/ZapMiddleware.Location.Api.csproj", "Location/ZapMiddleware.Location.Api/"]
COPY "Directory.Build.props" .
COPY "Directory.Packages.props" .
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages \
--mount=type=cache,id=dist,target=/dist \
dotnet restore "Location/ZapMiddleware.Location.Api"
# Check cache mounts
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages ls -al /root/.nuget/packages
RUN --mount=type=cache,id=dist,target=/dist ls -al /dist/intermediates/src
# Copy everything else and build app
COPY . .
WORKDIR "/src/Location/ZapMiddleware.Location.Api"
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages \
--mount=type=cache,id=dist,target=/dist \
dotnet publish -c Release -o /app
RUN rm /app/appsettings*.json
# Check cache mounts
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages ls -al /root/.nuget/packages
RUN --mount=type=cache,id=dist,target=/dist ls -al /dist/intermediates/src
Relevant parts of docker build logs: The cache directories are populated with the expected package and build stage artefacts Extracting cache: Extraction seems to happen, but the resulting cache that gets uploaded to GHA is empty 
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I resolved my issue by ensuring that the local directory doesn't exist before running the cache dance, and changing the path to something relative to the checkout. |
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I'm also experiencing same issue. Relevant parts of GitHub Actions Workflow: |
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I am probably missing something, but doing the same as the example results in an empty cache :
Dockerfile snippet using this cache :
I have the same issue with other caches I tried (pnpm store, build dist folders, etc), so that's not related specifically to this path but to the way I implement the action (according to the documentation).
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