📝 InputDockerfile
📁 dragDockerfiletothis ，orclickSelectfile
📋 record
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DockerfileChecktoolis Free OnlineTools， open and person Fast Dockerfilein most physical question。ToolsbaseinDocker specificationandHadolintruleset，physicalwhendetectSecurevulnerability、imageVolumeoptimizeopportunityand question，let containerimagemoreSecure、morelight 、morehigh 。
1. inInput PasteDockerfilecontent，ordragDockerfilefiletoUpload
2. click"Check"buttonorusingfast keyCtrl+EnterStartCheck
3. viewCheckResult：Quality separate、questionCount、concretebodyquestionlist
4. clickEachquestionviewdetaildescriptionand suggestion
5. click"Copy suggestion"willAll suggestionCopyto
6. using"loadshowexample"view Dockerfileand question
inCI/CDstream linein，DevOps usinglocalTools query Submit Dockerfile，confirmprotected combinedpublic Securespecificationandmost physical standard， notSecure imageenter 。
DockerimageVolumethroughbig，throughChecktool multiplelayerRUN NotMerge、Notcleanupaptcache、using ubuntu non-alpinebase imageetcquestion， afterimageVolumedecrease60%above。
Secure for containerenterrowaudit，usingChecktoolFast withrootRun、 22port、usinglatestlabeletcSecure ，Generatewholemodify single。
Dockernewmanualthroughloadshowexample， common Dockerfileencodewriteerrorandmost physical ，Fast encodewritehighQualityDockerfile 。
DockerfileisDocker image bluegraph， QualitydirectlyimpactcontainerSecureproperty、imageSizeand Speed。aboutkeymost physical including：usingmultiplephase decreasemostfinalimageSize；Selectalpineetc simplebase image；MergeRUN decreaseimagelayernumber；usingCOPY non-ADD outsideDecompress；Settingsnon-rootuserRunApply；Add.dockerignoresortdividedon't need file； setbase imageversionlabel non-usinglatest。 Thesephysical can containerSecurepropertyanddeploy 。
candetect30+typeFAQ，including：usinglatestlabel、withrootuserRun、Notcleanupaptcache、multiplelayerRUN canMerge、COPYNotusing--chown、 fewHEALTHCHECK、usingADD non-COPY、NotSettingsWORKDIR、 notSecureportetc。
rule Docker most physical textfileandHadolintruleset， Secureproperty、imageSizeoptimize、 、maintainabilityetc side。
supportsAllstandardDockerfile ：FROM、RUN、CMD、LABEL、EXPOSE、ENV、ADD、COPY、ENTRYPOINT、VOLUME、USER、WORKDIR、ARG、ONBUILD、STOPSIGNAL、HEALTHCHECK、SHELLetc。
questionseparatefor etclevel：error（red ，mustmust ，impactSecureorfeature）、warning（yellow ，suggestion ，impactPerformanceormost physical ）、info（blue ，optimizesuggestion， imageQuality）。
notwill。AllChecklogical equalinBrowsetoolLocalExecute，Dockerfilecodenotwill open device，completefullprotected codeprivacy。
Eachquestionall concretebody suggestionandcodeshowexample，clickquestioncanview beforeafter forthancode， keyCopy after code。
supports。caninInput Pastemultiple Dockerfilecontent，Toolswill Analyze totalResult，alsocandragmultiple file Check。