Instalar Tomcat con Docker
Método 1: docker pull tomcat
BuscarDocker HubLas imágenes de Tomcat en:
Puede ver otras versiones de tomcat mediante Sort by; por defecto es la última versión.tomcat:latest。
Además, también podemos usar en la consoladocker search tomcatel comando para ver las versiones disponibles:
ejemplo@ejemplo:~/tomcat$ docker search tomcat NAME DESCRIPTION STARS OFFICIAL AUTOMATED tomcat Apache Tomcat is an open source implementa... 744 [OK] dordoka/tomcat Ubuntu 14.04, Oracle JDK 8 and Tomcat 8 ba... 19 [OK] consol/tomcat-7.0 Tomcat 7.0.57, 8080, "admin/admin" 16 [OK] consol/tomcat-8.0 Tomcat 8.0.15, 8080, "admin/admin" 14 [OK] cloudesire/tomcat Tomcat server, 6/7/8 8 [OK] davidcaste/alpine-tomcat Apache Tomcat 7/8 using Oracle Java 7/8 wi... 6 [OK] andreptb/tomcat Debian Jessie based image with Apache Tomc... 4 [OK] kieker/tomcat 2 [OK] fbrx/tomcat Minimal Tomcat image based on Alpine Linux 2 [OK] jtech/tomcat Latest Tomcat production distribution on l... 1 [OK]
Aquí extraemos la imagen oficial:
ejemplo@ejemplo:~/tomcat$ docker pull tomcat
Una vez completada la descarga, podemos ver la imagen con REPOSITORY tomcat en la lista de imágenes locales.
ejemplo@ejemplo:~/tomcat$ docker images|grep tomcat tomcat latest 70f819d3d2d9 7 days ago 335.8 MB
Método 2: Construir mediante Dockerfile
Crear Dockerfile
Primero, cree el directorio tomcat para almacenar los elementos relacionados posteriores.
ejemplo@ejemplo:~$ mkdir -p ~/tomcat/webapps ~/tomcat/logs ~/tomcat/conf
El directorio webapps se mapeará al directorio de aplicaciones configurado por el contenedor tomcat.
El directorio logs se mapeará al directorio de registros del contenedor tomcat.
Los archivos de configuración en el directorio conf se mapearán a los archivos de configuración del contenedor tomcat.
Entre en el directorio tomcat creado y cree el Dockerfile.
FROM openjdk:8-jre
ENV CATALINA_HOME /usr/local/tomcat
ENV PATH $CATALINA_HOME/bin:$PATH
RUN mkdir -p "$CATALINA_HOME"
WORKDIR $CATALINA_HOME
# let "Tomcat Native" live somewhere isolated
ENV TOMCAT_NATIVE_LIBDIR $CATALINA_HOME/native-jni-lib
ENV LD_LIBRARY_PATH ${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$TOMCAT_NATIVE_LIBDIR
# runtime dependencies for Tomcat Native Libraries
# Tomcat Native 1.2+ requires a newer version of OpenSSL than debian:jessie has available
# > checking OpenSSL library version >= 1.0.2...
# > configure: error: Your version of OpenSSL is not compatible with this version of tcnative
# see http://tomcat.10.x6.nabble.com/VOTE-Release-Apache-Tomcat-8-0-32-tp5046007p5046024.html (and following discussion)
# and https://github.com/docker-library/tomcat/pull/31
ENV OPENSSL_VERSION 1.1.0f-3+deb9u2
RUN set -ex; \
currentVersion="$(dpkg-query --show --showformat '${Version}\n' openssl)"; \
if dpkg --compare-versions "$currentVersion" '<<' "$OPENSSL_VERSION"; then \
if ! grep -q stretch /etc/apt/sources.list; then \
# only add stretch if we're not already building from within stretch
{ \
echo 'deb http://deb.debian.org/debian stretch main'; \
echo 'deb http://security.debian.org stretch/updates main'; \
echo 'deb http://deb.debian.org/debian stretch-updates main'; \
} > /etc/apt/sources.list.d/stretch.list; \
{ \
# add a negative "Pin-Priority" so that we never ever get packages from stretch unless we explicitly request them
echo 'Package: *'; \
echo 'Pin: release n=stretch*'; \
echo 'Pin-Priority: -10'; \
echo; \
# ... except OpenSSL, which is the reason we're here
echo 'Package: openssl libssl*'; \
echo "Pin: version $OPENSSL_VERSION"; \
echo 'Pin-Priority: 990'; \
} > /etc/apt/preferences.d/stretch-openssl; \
fi; \
apt-get update; \
apt-get install -y --no-install-recommends openssl="$OPENSSL_VERSION"; \
rm -rf /var/lib/apt/lists/*; \
fi
RUN apt-get update && apt-get install -y --no-install-recommends \
libapr1 \
&& rm -rf /var/lib/apt/lists/*
# see https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/KEYS
# see also "update.sh" (https://github.com/docker-library/tomcat/blob/master/update.sh)
ENV GPG_KEYS 05AB33110949707C93A279E3D3EFE6B686867BA6 07E48665A34DCAFAE522E5E6266191C37C037D42 47309207D818FFD8DCD3F83F1931D684307A10A5 541FBE7D8F78B25E055DDEE13C370389288584E7 61B832AC2F1C5A90F0F9B00A1C506407564C17A3 713DA88BE50911535FE716F5208B0AB1D63011C7 79F7026C690BAA50B92CD8B66A3AD3F4F22C4FED 9BA44C2621385CB966EBA586F72C284D731FABEE A27677289986DB50844682F8ACB77FC2E86E29AC A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 DCFD35E0BF8CA7344752DE8B6FB21E8933C60243 F3A04C595DB5B6A5F1ECA43E3B7BBB100D811BBE F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23
ENV TOMCAT_MAJOR 8
ENV TOMCAT_VERSION 8.5.32
ENV TOMCAT_SHA512 fc010f4643cb9996cad3812594190564d0a30be717f659110211414faf8063c61fad1f18134154084ad3ddfbbbdb352fa6686a28fbb6402d3207d4e0a88fa9ce
ENV TOMCAT_TGZ_URLS \
# https://issues.apache.org/jira/browse/INFRA-8753?focusedCommentId=14735394#comment-14735394
https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz \
# if the version is outdated, we might have to pull from the dist/archive :/
https://www-us.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz \
https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz \
https://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz
ENV TOMCAT_ASC_URLS \
https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc \
# not all the mirrors actually carry the .asc files :'(
https://www-us.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc \
https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc \
https://archive.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz.asc
RUN set -eux; \
\
savedAptMark="$(apt-mark showmanual)"; \
apt-get update; \
\
apt-get install -y --no-install-recommends gnupg dirmngr; \
\
export GNUPGHOME="$(mktemp -d)"; \
for key in $GPG_KEYS; do \
gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
done; \
\
apt-get install -y --no-install-recommends wget ca-certificates; \
\
success=; \
for url in $TOMCAT_TGZ_URLS; do \
if wget -O tomcat.tar.gz "$url"; then \
success=1; \
break; \
fi; \
done; \
[ -n "$success" ]; \
\
echo "$TOMCAT_SHA512 *tomcat.tar.gz" | sha512sum -c -; \
\
success=; \
for url in $TOMCAT_ASC_URLS; do \
if wget -O tomcat.tar.gz.asc "$url"; then \
success=1; \
break; \
fi; \
done; \
[ -n "$success" ]; \
\
gpg --batch --verify tomcat.tar.gz.asc tomcat.tar.gz; \
tar -xvf tomcat.tar.gz --strip-components=1; \
rm bin/*.bat; \
rm tomcat.tar.gz*; \
rm -rf "$GNUPGHOME"; \
\
nativeBuildDir="$(mktemp -d)"; \
tar -xvf bin/tomcat-native.tar.gz -C "$nativeBuildDir" --strip-components=1; \
apt-get install -y --no-install-recommends \
dpkg-dev \
gcc \
libapr1-dev \
libssl-dev \
make \
"openjdk-${JAVA_VERSION%%[.~bu-]*}-jdk=$JAVA_DEBIAN_VERSION" \
; \
( \
export CATALINA_HOME="$PWD"; \
cd "$nativeBuildDir/native"; \
gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
./configure \
--build="$gnuArch" \
--libdir="$TOMCAT_NATIVE_LIBDIR" \
--prefix="$CATALINA_HOME" \
--with-apr="$(which apr-1-config)" \
--with-java-home="$(docker-java-home)" \
--with-ssl=yes; \
make -j "$(nproc)"; \
make install; \
); \
rm -rf "$nativeBuildDir"; \
rm bin/tomcat-native.tar.gz; \
\
# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
apt-mark auto '.*' > /dev/null; \
[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
rm -rf /var/lib/apt/lists/*; \
\
# sh removes env vars it doesn't support (ones with periods)
# https://github.com/docker-library/tomcat/issues/77
find ./bin/ -name '*.sh' -exec sed -ri 's|^#!/bin/sh$|#!/usr/bin/env bash|' '{}' +
# verify Tomcat Native is working properly
RUN set -e \
&& nativeLines="$(catalina.sh configtest 2>&1)" \
&& nativeLines="$(echo "$nativeLines" | grep 'Apache Tomcat Native')" \
&& nativeLines="$(echo "$nativeLines" | sort -u)" \
&& if ! echo "$nativeLines" | grep 'INFO: Loaded APR based Apache Tomcat Native library' >&2; then \
echo >&2 "$nativeLines"; \
exit 1; \
fi
EXPOSE 8080
CMD ["catalina.sh", "run"]
Cree una imagen mediante Dockerfile y reemplácela con su propio nombre:
ejemplo@ejemplo:~/tomcat$ docker build -t tomcat .
Una vez completada la creación, podemos encontrar la imagen recién creada en la lista de imágenes locales:
ejemplo@ejemplo:~/tomcat$ docker images|grep tomcat tomcat latest 70f819d3d2d9 7 days ago 335.8 MB
Usar la imagen de tomcat
Ejecutar el contenedor
ejemplo@ejemplo:~/tomcat$ docker run --name tomcat -p 8080:8080 -v $PWD/test:/usr/local/tomcat/webapps/test -d tomcat acb33fcb4beb8d7f1ebace6f50f5fc204b1dbe9d524881267aa715c61cf75320 ejemplo@ejemplo:~/tomcat$
Explicación del comando:
-p 8080:8080：Mapea el puerto 8080 del host al puerto 8080 del contenedor.
-v $PWD/test:/usr/local/tomcat/webapps/test：Monta el directorio test del directorio actual del host en /test del contenedor.
Ver el estado de inicio del contenedor
ejemplo@ejemplo:~/tomcat$ docker ps CONTAINER ID IMAGE COMMAND ... PORTS NAMES acb33fcb4beb tomcat "catalina.sh run" ... 0.0.0.0:8080->8080/tcp tomcat
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