├── .github ├── dependabot.yml └── workflows │ ├── automerge.yaml │ ├── pr.yaml │ └── publish.yaml ├── Dockerfile ├── LICENSE ├── README.md ├── healthcheck ├── go.mod ├── go.sum └── healthcheck.go ├── mime.types ├── nginx.compose └── nginx.conf /.github/dependabot.yml: -------------------------------------------------------------------------------- 1 | version: 2 2 | updates: 3 | 4 | - package-ecosystem: github-actions 5 | directory: "/." 6 | schedule: 7 | interval: daily 8 | time: '04:00' 9 | open-pull-requests-limit: 10 10 | 11 | - package-ecosystem: docker 12 | directory: "/." 13 | schedule: 14 | interval: daily 15 | time: '04:00' 16 | open-pull-requests-limit: 10 17 | commit_message: 18 | prefix: "feat(docker)" 19 | 20 | - package-ecosystem: gomod 21 | directory: "/healthcheck" 22 | schedule: 23 | interval: daily 24 | time: '04:00' 25 | open-pull-requests-limit: 10 26 | 27 | -------------------------------------------------------------------------------- /.github/workflows/automerge.yaml: -------------------------------------------------------------------------------- 1 | name: Automerge 2 | 3 | on: 4 | pull_request_target: 5 | 6 | jobs: 7 | auto-merge: 8 | runs-on: ubuntu-latest 9 | if: github.actor == 'dependabot[bot]' 10 | steps: 11 | - 12 | uses: actions/checkout@v2 13 | - 14 | uses: ahmadnassri/action-dependabot-auto-merge@v2.6 15 | with: 16 | github-token: ${{ secrets.token }} 17 | -------------------------------------------------------------------------------- /.github/workflows/pr.yaml: -------------------------------------------------------------------------------- 1 | on: pull_request 2 | name: dockerfile linting 3 | jobs: 4 | 5 | golanglint: 6 | name: golang lint 7 | runs-on: ubuntu-latest 8 | steps: 9 | - uses: actions/checkout@v2.3.4 10 | - uses: hazcod/action-golangci-lint@master 11 | with: 12 | github_token: ${{ secrets.GITHUB_TOKEN }} 13 | directory: healthcheck 14 | 15 | dockerfilelint: 16 | name: dockerfile lint 17 | runs-on: ubuntu-latest 18 | steps: 19 | - uses: actions/checkout@v2.3.4 20 | - name: hadolint 21 | uses: burdzwastaken/hadolint-action@1.10.0 22 | env: 23 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 24 | HADOLINT_ACTION_DOCKERFILE_FOLDER: . 25 | 26 | dockerbuild: 27 | name: docker build 28 | runs-on: ubuntu-latest 29 | steps: 30 | - uses: actions/checkout@v2.3.4 31 | - name: extract tag 32 | id: vars 33 | run: echo ::set-output name=nginx_version::$(grep '^FROM nginx' Dockerfile | cut -d ' ' -f 2 | cut -d ':' -f 2) 34 | - name: docker build 35 | run: docker build . --file Dockerfile --tag image:${{ steps.vars.outputs.nginx_version }} 36 | 37 | dockerscan: 38 | name: docker security scan 39 | runs-on: ubuntu-latest 40 | steps: 41 | - uses: actions/checkout@v2.3.4 42 | - name: docker build 43 | run: docker build . --file Dockerfile --tag image 44 | - name: cached scan db 45 | uses: actions/cache@v2.1.7 46 | with: 47 | path: vulndb/ 48 | key: trivy-vulndb 49 | - name: run security scan 50 | env: 51 | DISTRO: debian 52 | run: | 53 | docker run --rm \ 54 | -v /var/run/docker.sock:/var/run/docker.sock \ 55 | -v "$(pwd)/vulndb/":/root/.cache/ \ 56 | aquasec/trivy --severity HIGH,CRITICAL,MEDIUM --no-progress --only-update $DISTRO --ignore-unfixed --exit-code 1 --cache-dir /root/.cache/ image 57 | docker run --rm -v "$(pwd)/vulndb/":/root/.cache/ alpine:latest chmod 777 -R /root/.cache/ 58 | 59 | -------------------------------------------------------------------------------- /.github/workflows/publish.yaml: -------------------------------------------------------------------------------- 1 | on: 2 | push: 3 | branches: 4 | - master 5 | 6 | name: push image 7 | jobs: 8 | dockerpush: 9 | name: docker build 10 | runs-on: ubuntu-latest 11 | steps: 12 | - 13 | uses: actions/checkout@v2.3.4 14 | - 15 | uses: go-semantic-release/action@v1 16 | id: version 17 | with: 18 | github-token: ${{ secrets.GITHUB_TOKEN }} 19 | - 20 | run: echo "Pushing version ${{ steps.version.outputs.version }}" 21 | - 22 | name: Publish to Registry 23 | uses: elgohr/Publish-Docker-Github-Action@3.04 24 | with: 25 | registry: ghcr.io 26 | name: "ghcr.io/ironpeakservices/iron-nginx:${{ steps.version.outputs.version }}" 27 | username: hazcod 28 | password: ${{ secrets.PACKAGE_TOKEN }} 29 | - 30 | name: Create GitHub release 31 | uses: actions/create-release@v1.1.4 32 | with: 33 | tag_name: ${{ steps.version.outputs.version }} 34 | release_name: iron-nginx 35 | draft: false 36 | prerelease: false 37 | env: 38 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 39 | 40 | 41 | -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | # image used for the healthcheck binary 2 | FROM golang:1.17.5-alpine AS gobuilder 3 | COPY healthcheck/ /go/src/healthcheck/ 4 | RUN CGO_ENABLED=0 GO111MODULE=auto go build -trimpath -ldflags '-w -s -extldflags "-static"' -o /healthcheck /go/src/healthcheck/ 5 | 6 | # 7 | # --- 8 | # 9 | 10 | # image used to copy our official nginx binaries 11 | FROM nginx:1.25.4 AS base 12 | 13 | # create empty index page 14 | RUN echo 'Hello world' > /index.html 15 | 16 | # copy the required libraries out of the official nginx image (based on debian) 17 | RUN rm -r /opt && mkdir /opt \ 18 | && cp -a --parents /usr/lib/nginx /opt \ 19 | && cp -a --parents /var/cache/nginx /opt \ 20 | && cp -a --parents /usr/share/nginx /opt \ 21 | && cp -a --parents /usr/sbin/nginx /opt \ 22 | && cp -a --parents /var/log/nginx /opt \ 23 | && cp -a --parents /lib/x86_64-linux-gnu/libpcre.so.* /opt \ 24 | && cp -a --parents /lib/x86_64-linux-gnu/libz.so.* /opt \ 25 | && cp -a --parents /lib/x86_64-linux-gnu/libc.so.* /opt \ 26 | && cp -a --parents /lib/x86_64-linux-gnu/libdl.so.* /opt \ 27 | && cp -a --parents /lib/x86_64-linux-gnu/libpthread.so.* /opt \ 28 | && cp -a --parents /lib/x86_64-linux-gnu/libcrypt.so.* /opt \ 29 | && cp -a --parents /usr/lib/x86_64-linux-gnu/libssl.so.* /opt \ 30 | && cp -a --parents /usr/lib/x86_64-linux-gnu/libcrypto.so.* /opt \ 31 | && cp -a --parents /lib/x86_64-linux-gnu/libdl-* /opt \ 32 | && cp -a --parents /lib/x86_64-linux-gnu/libpthread-* /opt \ 33 | && cp -a --parents /lib/x86_64-linux-gnu/libcrypt-* /opt \ 34 | && cp -a --parents /lib/x86_64-linux-gnu/libc-* /opt 35 | 36 | # 37 | # --- 38 | # 39 | 40 | # start from the distroless scratch image (with glibc), based on debian:buster 41 | FROM gcr.io/distroless/base-debian10:nonroot 42 | 43 | # image owner label 44 | LABEL org.opencontainers.image.source https://github.com/ironpeakservices/iron-nginx 45 | 46 | # copy our empty index page 47 | COPY --from=base --chown=nonroot /index.html /assets/index.html 48 | 49 | # copy in our healthcheck binary 50 | COPY --from=gobuilder --chown=nonroot /healthcheck /healthcheck 51 | 52 | # copy in our required libraries 53 | COPY --from=base --chown=nonroot /opt / 54 | 55 | # copy our config files 56 | COPY --chown=nonroot mime.types nginx.conf / 57 | 58 | # run as an unprivileged user 59 | USER nonroot 60 | 61 | # default nginx port 62 | EXPOSE 8080 63 | 64 | # healthcheck to report the container status 65 | HEALTHCHECK --interval=5s --timeout=10s --retries=3 CMD [ "/healthcheck", "8080" ] 66 | 67 | # entrypoint 68 | CMD ["/usr/sbin/nginx", "-p", "/tmp/", "-g", "error_log /dev/stderr notice;", "-c", "/nginx.conf"] 69 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ironpeakservices/iron-nginx 2 | Secure base image for running nginx. 3 | 4 | `docker pull ghcr.io/ironpeakservices/iron-nginx:1.19.3` 5 | 6 | ## How is this different? 7 | We build from the official nginx docker image, but additionally: 8 | - an empty scratch container (no shell, unprivileged user, ...) for a tiny attack vector 9 | - secure healthcheck binary for embedded container monitoring 10 | - hardened nginx config 11 | - hardened Docker Compose file 12 | - max memory set to 1GB 13 | 14 | ## Example 15 | ``` 16 | FROM ghcr.io/ironpeakservices/iron-nginx:1.19.3 17 | COPY --chown=nonroot css/ js/ html/ /assets 18 | ``` 19 | 20 | ## Update policy 21 | Updates to the official nginx docker image are automatically created as a pull request and trigger linting & a docker build. 22 | When those checks complete without errors, a merge into master will trigger a deploy with the same nginx version to packages. 23 | -------------------------------------------------------------------------------- /healthcheck/go.mod: -------------------------------------------------------------------------------- 1 | module github.com/ironpeakservices/iron-nginx/healthcheck 2 | 3 | go 1.13 4 | -------------------------------------------------------------------------------- /healthcheck/go.sum: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ironpeakservices/iron-nginx/a519dcd2c9f777905b5b98a30be661d45d307944/healthcheck/go.sum -------------------------------------------------------------------------------- /healthcheck/healthcheck.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "net/http" 6 | "os" 7 | ) 8 | 9 | const ( 10 | host = "localhost" 11 | uri = "_health" 12 | ) 13 | 14 | func main() { 15 | if len(os.Args) != 2 { 16 | fmt.Printf("Usage: %s \n", os.Args[0]) 17 | os.Exit(1) 18 | } 19 | 20 | resp, err := http.Get(fmt.Sprintf("http://%s:%s/%s", host, os.Args[1], uri)) 21 | if err != nil { 22 | fmt.Printf("Error: could not query %s:%s: %+v\n", host, os.Args[1], err) 23 | os.Exit(1) 24 | } 25 | 26 | defer resp.Body.Close() 27 | 28 | if resp.StatusCode > 399 { 29 | fmt.Printf("Error: status code returned was %d\n", resp.StatusCode) 30 | os.Exit(1) 31 | } 32 | 33 | // exit 0 34 | } 35 | -------------------------------------------------------------------------------- /mime.types: -------------------------------------------------------------------------------- 1 | types { 2 | text/html html htm shtml; 3 | text/css css; 4 | text/xml xml; 5 | image/gif gif; 6 | image/jpeg jpeg jpg; 7 | application/javascript js; 8 | application/atom+xml atom; 9 | application/rss+xml rss; 10 | 11 | text/mathml mml; 12 | text/plain txt; 13 | text/vnd.sun.j2me.app-descriptor jad; 14 | text/vnd.wap.wml wml; 15 | text/x-component htc; 16 | 17 | image/png png; 18 | image/svg+xml svg svgz; 19 | image/tiff tif tiff; 20 | image/vnd.wap.wbmp wbmp; 21 | image/webp webp; 22 | image/x-icon ico; 23 | image/x-jng jng; 24 | image/x-ms-bmp bmp; 25 | 26 | font/woff woff; 27 | font/woff2 woff2; 28 | 29 | application/java-archive jar war ear; 30 | application/json json; 31 | application/mac-binhex40 hqx; 32 | application/msword doc; 33 | application/pdf pdf; 34 | application/postscript ps eps ai; 35 | application/rtf rtf; 36 | application/vnd.apple.mpegurl m3u8; 37 | application/vnd.google-earth.kml+xml kml; 38 | application/vnd.google-earth.kmz kmz; 39 | application/vnd.ms-excel xls; 40 | application/vnd.ms-fontobject eot; 41 | application/vnd.ms-powerpoint ppt; 42 | application/vnd.oasis.opendocument.graphics odg; 43 | application/vnd.oasis.opendocument.presentation odp; 44 | application/vnd.oasis.opendocument.spreadsheet ods; 45 | application/vnd.oasis.opendocument.text odt; 46 | application/vnd.openxmlformats-officedocument.presentationml.presentation 47 | pptx; 48 | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet 49 | xlsx; 50 | application/vnd.openxmlformats-officedocument.wordprocessingml.document 51 | docx; 52 | application/vnd.wap.wmlc wmlc; 53 | application/x-7z-compressed 7z; 54 | application/x-cocoa cco; 55 | application/x-java-archive-diff jardiff; 56 | application/x-java-jnlp-file jnlp; 57 | application/x-makeself run; 58 | application/x-perl pl pm; 59 | application/x-pilot prc pdb; 60 | application/x-rar-compressed rar; 61 | application/x-redhat-package-manager rpm; 62 | application/x-sea sea; 63 | application/x-shockwave-flash swf; 64 | application/x-stuffit sit; 65 | application/x-tcl tcl tk; 66 | application/x-x509-ca-cert der pem crt; 67 | application/x-xpinstall xpi; 68 | application/xhtml+xml xhtml; 69 | application/xspf+xml xspf; 70 | application/zip zip; 71 | 72 | application/octet-stream bin exe dll; 73 | application/octet-stream deb; 74 | application/octet-stream dmg; 75 | application/octet-stream iso img; 76 | application/octet-stream msi msp msm; 77 | 78 | audio/midi mid midi kar; 79 | audio/mpeg mp3; 80 | audio/ogg ogg; 81 | audio/x-m4a m4a; 82 | audio/x-realaudio ra; 83 | 84 | video/3gpp 3gpp 3gp; 85 | video/mp2t ts; 86 | video/mp4 mp4; 87 | video/mpeg mpeg mpg; 88 | video/quicktime mov; 89 | video/webm webm; 90 | video/x-flv flv; 91 | video/x-m4v m4v; 92 | video/x-mng mng; 93 | video/x-ms-asf asx asf; 94 | video/x-ms-wmv wmv; 95 | video/x-msvideo avi; 96 | } -------------------------------------------------------------------------------- /nginx.compose: -------------------------------------------------------------------------------- 1 | version: '3.7' 2 | 3 | networks: 4 | frontend: 5 | name: frontend 6 | # driver: overlay on swarm mode 7 | internal: true 8 | 9 | services: 10 | nginx: 11 | container_name: nginx 12 | hostname: nginx 13 | 14 | image: "nginx" 15 | 16 | expose: 17 | - 8080 18 | 19 | tty: false 20 | 21 | restart: "on-failure:5" 22 | 23 | read_only: true 24 | 25 | security_opt: 26 | - "no-new-privileges" 27 | 28 | # only on compose version 2.x 29 | #pids_limit: 1 30 | 31 | cap_drop: 32 | - ALL 33 | 34 | networks: 35 | - frontend 36 | 37 | deploy: 38 | resources: 39 | limits: 40 | memory: 1GB 41 | -------------------------------------------------------------------------------- /nginx.conf: -------------------------------------------------------------------------------- 1 | error_log /dev/stderr warn; 2 | pid /tmp/nginx.pid; 3 | daemon off; 4 | 5 | events {} 6 | 7 | http { 8 | access_log /dev/stdout combined; 9 | 10 | root /assets; 11 | 12 | server_tokens off; 13 | 14 | include /mime.types; 15 | 16 | client_body_buffer_size 10K; 17 | client_header_buffer_size 1k; 18 | client_max_body_size 8m; 19 | large_client_header_buffers 2 1k; 20 | 21 | client_body_timeout 12; 22 | client_header_timeout 12; 23 | keepalive_timeout 15; 24 | send_timeout 10; 25 | 26 | gzip on; 27 | gzip_http_version 1.0; 28 | gzip_comp_level 5; 29 | gzip_min_length 512; 30 | gzip_buffers 4 8k; 31 | gzip_proxied any; 32 | gzip_types 33 | 34 | # text/html is always compressed by HttpGzipModule 35 | text/css 36 | text/plain 37 | text/x-component 38 | application/javascript 39 | application/json 40 | application/xml 41 | application/xhtml+xml 42 | application/x-font-ttf 43 | application/x-font-opentype 44 | application/vnd.ms-fontobject 45 | image/svg+xml 46 | image/x-icon; 47 | 48 | client_body_temp_path /tmp/clientbody; 49 | proxy_temp_path /tmp/proxy; 50 | fastcgi_temp_path /tmp/fastcgi; 51 | uwsgi_temp_path /tmp/uwsgi; 52 | scgi_temp_path /tmp/scgi; 53 | 54 | server { 55 | listen 8080 default; 56 | server_name ""; 57 | 58 | location /_health { 59 | stub_status; 60 | allow 127.0.0.1; 61 | deny all; 62 | } 63 | } 64 | } --------------------------------------------------------------------------------